diff --git a/lib/classes/Session/Logger.php b/lib/classes/Session/Logger.php
index d65353bbb3..b3495cffdf 100644
--- a/lib/classes/Session/Logger.php
+++ b/lib/classes/Session/Logger.php
@@ -111,12 +111,14 @@ class Session_Logger
             }
         }
 
+        $conn =  $databox->get_connection();
+
         $sql = "INSERT INTO log
-              (id, date,sit_session, user, site, usrid,coll_list, nav,
+              (id, date,sit_session, user, site, usrid, nav,
                 version, os, res, ip, user_agent,appli, fonction,
                 societe, activite, pays)
             VALUES
-              (null,now() , :ses_id, :usr_login, :site_id, :usr_id, :coll_list
+              (null,now() , :ses_id, :usr_login, :site_id, :usr_id
               , :browser, :browser_version,  :platform, :screen, :ip
               , :user_agent, :appli, :fonction, :company, :activity, :country)";
 
@@ -125,7 +127,6 @@ class Session_Logger
             ':usr_login'       => $app['phraseanet.user'] ? $app['phraseanet.user']->get_login() : null,
             ':site_id'         => $app['phraseanet.registry']->get('GV_sit'),
             ':usr_id'          => $app['phraseanet.user'] ? $app['phraseanet.user']->get_id() : null,
-            ':coll_list'       => implode(',', $colls),
             ':browser'         => $browser->getBrowser(),
             ':browser_version' => $browser->getExtendedVersion(),
             ':platform'        => $browser->getPlatform(),
@@ -139,12 +140,24 @@ class Session_Logger
             ':country'  => $app['phraseanet.user'] ? $app['phraseanet.user']->get_country() : null
         );
 
-        $stmt = $databox->get_connection()->prepare($sql);
+        $stmt = $conn->prepare($sql);
         $stmt->execute($params);
-
-        $log_id = $databox->get_connection()->lastInsertId();
+        $log_id = $conn->lastInsertId();
         $stmt->closeCursor();
 
+        $sql = "INSERT INTO log_colls (id, log_id, coll_id) VALUES (null, :log_id, :coll_id)";
+        $stmt = $conn->prepare($sql);
+
+        foreach ($colls as $collId) {
+            $stmt->execute(array(
+                ':log_id'  => $log_id,
+                ':coll_id' => $collId
+            ));
+        }
+
+        $stmt->closeCursor();
+        unset($stmt, $conn);
+
         return new Session_Logger($app, $databox, $log_id);
     }
 
diff --git a/lib/classes/module/report/activity.php b/lib/classes/module/report/activity.php
index f0a1d84d8d..1a5108242b 100644
--- a/lib/classes/module/report/activity.php
+++ b/lib/classes/module/report/activity.php
@@ -113,9 +113,10 @@ class module_report_activity extends module_report
 
         $sql = "
                 SELECT DATE_FORMAT( log.date, '%k' ) AS heures, SUM(1) AS nb
-                FROM log
-                WHERE (" . $date_filter['sql'] . ")
-                AND (" . $coll_filter['sql'] . ")
+                FROM (log)
+                    INNER JOIN log_colls ON (log.id = log_colls.log_id)
+                WHERE " . $date_filter['sql'] . "
+                AND " . $coll_filter['sql'] . "
                 AND " . $site_filter['sql'] . "
                 GROUP BY heures
                 ORDER BY heures ASC";
@@ -177,11 +178,13 @@ class module_report_activity extends module_report
         $sql = "
                 SELECT DATE_FORMAT(log_search.date,'%Y-%m-%d %H:%i:%S') as date ,
                 log_search.search ,log_search.results
-                FROM (log_search inner join log on log.id = log_search.log_id)
+                FROM (log_search)
+                    INNER JOIN log ON (log.id = log_search.log_id)
+                    INNER JOIN log_colls ON (log.id = log_colls.log_id)
                 WHERE log_search.date > " . $date_filter['sql'] . "
                 AND log.`" . $what . "` = :main_value
                 AND " . $site_filter['sql'] . "
-                AND (" . $coll_filter['sql'] . ")
+                AND " . $coll_filter['sql'] . "
                 ORDER BY date";
 
         $stmt = $conn->prepare($sql);
@@ -240,7 +243,9 @@ class module_report_activity extends module_report
                 SELECT TRIM(log_search.search) as search,
                     SUM(1) as nb,
                     ROUND(avg(results)) as nb_rep
-                FROM (log_search inner join log on log_search.log_id = log.id)
+                FROM (log_search)
+                    INNER JOIN log ON (log_search.log_id = log.id)
+                    INNER JOIN log_colls ON (log.id = log_colls.log_id)
                 WHERE " . $date_filter['sql'] . "
                 AND log_search.search != 'all'
                 AND (" . $coll_filter['sql'] . ")";
@@ -309,8 +314,10 @@ class module_report_activity extends module_report
         $sql = "
                 SELECT log_docs.record_id,
                     log_docs.date, log_docs.final as objets
-                FROM (`log_docs` inner join log on log_docs.log_id = log.id
-                    inner join record on log_docs.record_id = record.record_id)
+                FROM (`log_docs`)
+                    INNER JOIN log ON (log_docs.log_id = log.id)
+                    INNER JOIN log_colls ON (log.id = log_colls.log_id)
+                    INNER JOIN record ON (log_docs.record_id = record.record_id)
                 WHERE log_docs.action = 'download'
                 AND " . $date_filter['sql'] . "
                 AND " . $user_filter['sql'] . "
@@ -384,13 +391,11 @@ class module_report_activity extends module_report
               log_docs.date
              AS ddate,
                  final
-            FROM (
-            log_docs
-            INNER JOIN record ON record.record_id = log_docs.record_id
-            INNER JOIN log ON " . $site_filter['sql'] . "
-            AND log.id = log_docs.log_id
-            LEFT JOIN subdef AS s ON s.record_id = log_docs.record_id
-              AND s.name = log_docs.final)
+            FROM (log_docs)
+                INNER JOIN record ON (record.record_id = log_docs.record_id)
+                INNER JOIN log ON (" . $site_filter['sql'] . " AND log.id = log_docs.log_id)
+                INNER JOIN log_colls ON (log.id = log_colls.log_id)
+                LEFT JOIN subdef AS s ON (s.record_id = log_docs.record_id AND s.name = log_docs.final)
             WHERE " . $date_filter['sql'] . "
                 AND (log_docs.final != 'caption')
                 AND log_docs.action =  'download'
@@ -472,18 +477,20 @@ class module_report_activity extends module_report
         $conn = $s->getConnBas();
 
         $params = array();
+
         $date_filter = $filter->getDateFilter();
         $params = array_merge($params, $date_filter['params']);
+
         $coll_filter = $filter->getCollectionFilter();
         $params = array_merge($params, $coll_filter['params']);
         $site_filter = $filter->getGvSitFilter();
         $params = array_merge($params, $site_filter['params']);
-
         $this->req = "
                 SELECT  DISTINCT(log." . $on . ") as " . $on . ",
                     usrid,
                     SUM(1) as connexion
-                FROM log
+                FROM (log)
+                    INNER JOIN log_colls ON (log.id = log_colls.log_id)
                 WHERE log.user != 'API'
                 AND " . $site_filter['sql'] . "
                 AND " . $date_filter['sql'] . "
@@ -581,14 +588,15 @@ class module_report_activity extends module_report
                     TRIM(" . $on . ") as " . $on . ",
                     final, sum(1) as nb,
                     sum(size) as poid
-                FROM (log_docs as d
-                INNER JOIN log ON " . $site_filter['sql'] . "
-                    AND log.id = d.log_id
-                    AND " . $date_filter['sql'] . "
-                INNER JOIN record ON record.record_id = d.record_id
-                LEFT JOIN subdef as s on (d.action = 'download' OR d.action = 'mail')
-                    AND s.record_id=d.record_id and s.name=d.final
-                )
+                FROM (log_docs as d)
+                    INNER JOIN log ON (" . $site_filter['sql'] . "
+                        AND log.id = d.log_id
+                        AND " . $date_filter['sql'] . ")
+                    INNER JOIN log_colls ON (log.id = log_colls.log_id)
+                    INNER JOIN record ON record.record_id = d.record_id
+                    LEFT JOIN subdef as s on ((d.action = 'download' OR d.action = 'mail')
+                        AND s.record_id=d.record_id and s.name=d.final
+                    )
                 WHERE (" . $coll_filter['sql'] . ")
                     AND (" . $record_filter['sql'] . ")
                 GROUP BY " . $on . ", final, usrid
@@ -703,15 +711,14 @@ class module_report_activity extends module_report
 
         $sql = "
             SELECT log.usrid, log.user , d.final as getter,  d.record_id, d.date, s.*
-            FROM (log_docs as d
-            INNER JOIN log ON (" . $site_filter['sql'] . "
-                AND log.id = d.log_id
-                AND " . $date_filter['sql'] . ")
-            INNER JOIN record ON (record.record_id = d.record_id)
-            LEFT JOIN subdef as s ON (s.record_id=d.record_id and s.name='document'))
-            WHERE ((" . $coll_filter['sql'] . ")
-                AND " . $record_filter['sql'] . "
-                AND d.action='push')
+            FROM (log_docs as d)
+                INNER JOIN log ON (" . $site_filter['sql'] . "
+                    AND log.id = d.log_id
+                    AND " . $date_filter['sql'] . ")
+                INNER JOIN log_colls ON (log.id = log_colls.log_id)
+                INNER JOIN record ON (record.record_id = d.record_id)
+                LEFT JOIN subdef as s ON (s.record_id=d.record_id and s.name='document')
+            WHERE ((" . $coll_filter['sql'] . ") AND " . $record_filter['sql'] . " AND d.action='push')
         ";
 
         $stmt = $conn->prepare($sql);
@@ -773,14 +780,15 @@ class module_report_activity extends module_report
 
         $sql = "
                 SELECT log.usrid, user, final, sum(1) AS nb, sum(size) AS poid
-                FROM (log_docs AS log_date
-                INNER JOIN log ON log.site = :site_id
-                AND log.id = log_date.log_id
-                AND " . $datefilter['sql'] . ")
-                LEFT JOIN subdef AS s ON log_date.action = 'download'
-                AND s.record_id = log_date.record_id
-                AND s.name = log_date.final
-                AND (" . $collfilter['sql'] . ")
+                FROM (log_docs AS log_date)
+                    INNER JOIN log ON (log.site = :site_id
+                        AND log.id = log_date.log_id
+                        AND " . $datefilter['sql'] . ")
+                    INNER JOIN log_colls ON (log.id = log_colls.log_id)
+                    LEFT JOIN subdef AS s ON (log_date.action = 'download'
+                        AND s.record_id = log_date.record_id
+                        AND s.name = log_date.final
+                        AND (" . $collfilter['sql'] . "))
                 GROUP BY user, final
                 WITH rollup";
 
@@ -848,7 +856,8 @@ class module_report_activity extends module_report
 
         $sql = "
                 SELECT log_date.id, HOUR(log_date.date) as heures
-                FROM log as log_date
+                FROM (log as log_date)
+                    INNER JOIN log_colls ON (log_date.id = log_colls.log_id)
                 WHERE " . $datefilter['sql'] . "
                 AND (" . $collfilter['sql'] . ")
                 AND log_date.site = :site_id";
@@ -890,7 +899,7 @@ class module_report_activity extends module_report
             SELECT DISTINCT (
                 DATE_FORMAT( log_date.date, '%Y-%m-%d' )
                 ) AS ddate, COUNT( DATE_FORMAT( log_date.date, '%d' ) ) AS activity
-                FROM log as log_date
+                FROM log as log_date INNER JOIN log_colls ON (log_date.id = log_colls.log_id)
                 WHERE " . $datefilter['sql'] . "
                 AND log_date.site = :site_id
                 AND (" . $collfilter['sql'] . ")
@@ -928,9 +937,9 @@ class module_report_activity extends module_report
 
         $sql = "
                 SELECT log_date.usrid, log_date.user, sum(1) AS nb
-                FROM `log_search`
-                INNER JOIN log as log_date
-                ON log_search.log_id = log_date.id
+                FROM (`log_search`)
+                    INNER JOIN log as log_date ON (log_search.log_id = log_date.id)
+                    INNER JOIN log_colls ON (log_date.id = log_colls.log_id)
                 WHERE " . $datefilter['sql'] . "
                 AND log_date.site = :site_id
                 AND (" . $collfilter['sql'] . ")
@@ -969,9 +978,9 @@ class module_report_activity extends module_report
                 log_date.usrid,
                 log_date.user,
                 sum(1) AS nb
-            FROM `log_search`
-            INNER JOIN log as log_date
-            ON log_search.log_id = log_date.id
+            FROM (`log_search`)
+                INNER JOIN log as log_date ON (log_search.log_id = log_date.id)
+                INNER JOIN log_colls ON (log_date.id = log_colls.log_id)
             WHERE " . $datefilter['sql'] . "
             AND log_date.site = :site_id
             AND (" . $collfilter['sql'] . ")
@@ -1007,9 +1016,9 @@ class module_report_activity extends module_report
 
         $sql = "
             SELECT referrer, COUNT(referrer) as nb_view
-            FROM log_view
-            INNER JOIN log as log_date
-            ON log_view.log_id = log_date.id
+            FROM (log_view)
+                INNER JOIN log as log_date ON (log_view.log_id = log_date.id)
+                INNER JOIN log_colls ON (log_date.id = log_colls.log_id)
             WHERE " . $datefilter['sql'] . "
             AND (" . $collfilter['sql'] . ")
             GROUP BY referrer
@@ -1049,9 +1058,9 @@ class module_report_activity extends module_report
             SELECT DISTINCT (
             DATE_FORMAT( log_date.date, '%Y-%m-%d'  )
             ) AS ddate, COUNT( DATE_FORMAT( log_date.date, '%d' ) ) AS activity
-            FROM log_docs as log_date
-            INNER JOIN log
-            ON log_date.log_id = log.id
+            FROM (log_docs as log_date)
+                INNER JOIN log ON (log_date.log_id = log.id)
+                INNER JOIN log_colls ON (log.id = log_colls.log_id)
             WHERE " . $datefilter['sql'] . " AND log_date.action = 'add'
             AND (" . $collfilter['sql'] . ")
             GROUP BY ddate
@@ -1083,9 +1092,9 @@ class module_report_activity extends module_report
             SELECT DISTINCT (
             DATE_FORMAT( log_date.date, '%Y-%m-%d' )
             ) AS ddate, COUNT( DATE_FORMAT( log_date.date, '%d' ) ) AS activity
-            FROM log_docs as log_date
-            INNER JOIN log
-            ON log_date.log_id = log.id
+            FROM (log_docs as log_date)
+                INNER JOIN log ON log_date.log_id = log.id
+                INNER JOIN log_colls ON (log.id = log_colls.log_id)
             WHERE " . $datefilter['sql'] . " AND log_date.action = 'edit'
             AND (" . $collfilter['sql'] . ")
             GROUP BY ddate
@@ -1116,8 +1125,9 @@ class module_report_activity extends module_report
 
         $sql = "
             SELECT log.usrid, log.user, sum( 1 ) AS nb
-            FROM log_docs as log_date
-            INNER JOIN log ON log_date.log_id = log.id
+            FROM (log_docs as log_date)
+                INNER JOIN log ON (log_date.log_id = log.id)
+                INNER JOIN log_colls ON (log.id = log_colls.log_id)
             WHERE " . $datefilter['sql'] . " AND log_date.action = 'add'
             AND (" . $collfilter['sql'] . ")
             GROUP BY log.usrid
diff --git a/lib/classes/module/report/connexion.php b/lib/classes/module/report/connexion.php
index 46a3ef5907..20502e70ed 100644
--- a/lib/classes/module/report/connexion.php
+++ b/lib/classes/module/report/connexion.php
@@ -29,7 +29,6 @@ class module_report_connexion extends module_report
         , 'fonction'    => 'log.fonction'
         , 'site'        => 'log.site'
         , 'sit_session' => 'log.sit_session'
-        , 'coll_list'   => 'log.coll_list'
         , 'appli'       => 'log.appli'
         , 'ip'          => 'log.ip'
     );
@@ -115,18 +114,7 @@ class module_report_connexion extends module_report
                     continue;
                 }
 
-                if ($value == 'coll_list') {
-                    $coll = explode(",", $row[$value]);
-                    $this->result[$i][$value] = "";
-                    foreach ($coll as $id) {
-                        if ($this->result[$i][$value] != "") {
-                            $this->result[$i][$value].= " / ";
-                            $this->result[$i][$value] .= phrasea::bas_names(phrasea::baseFromColl($this->sbas_id, $id, $this->app), $this->app);
-                        } elseif ($this->result[$i][$value] == "") {
-                            $this->result[$i][$value] = phrasea::bas_names(phrasea::baseFromColl($this->sbas_id, $id, $this->app), $this->app);
-                        }
-                    }
-                } elseif ($value == 'appli') {
+                if ($value == 'appli') {
                     $applis = false;
                     if (($applis = @unserialize($row[$value])) !== false) {
                         if (empty($applis)) {
@@ -164,7 +152,8 @@ class module_report_connexion extends module_report
         $finalfilter .= 'log_date.site = :site_id';
 
         $sql = "SELECT    COUNT(usrid) as nb
-                FROM    log as log_date
+                FROM (log as log_date)
+                    INNER JOIN log_colls ON (log.id = log_colls.log_id)
                 WHERE " . $finalfilter;
 
         $stmt = $conn->prepare($sql);
diff --git a/lib/classes/module/report/dashboard/group.php b/lib/classes/module/report/dashboard/group.php
index e4af08f937..fde86f1a99 100644
--- a/lib/classes/module/report/dashboard/group.php
+++ b/lib/classes/module/report/dashboard/group.php
@@ -55,7 +55,7 @@ class module_report_dashboard_group implements module_report_dashboard_component
                         }
                     }
                 } else {
-                    throw new Exception("cannot group on a none dashboard object");
+                    continue;
                 }
             }
         }
diff --git a/lib/classes/module/report/download.php b/lib/classes/module/report/download.php
index 0dc748a326..6631d36428 100644
--- a/lib/classes/module/report/download.php
+++ b/lib/classes/module/report/download.php
@@ -187,10 +187,9 @@ class module_report_download extends module_report
 
         $sql = '
             SELECT SUM(1) AS nb
-            FROM (  log
-                INNER JOIN log_docs as log_date ON log.id = log_date.log_id
-                INNER JOIN record on log_date.record_id = record.record_id
-            )
+            FROM (log)
+                INNER JOIN log_docs as log_date ON (log.id = log_date.log_id)
+                INNER JOIN record ON (log_date.record_id = record.record_id)
             WHERE (
                 ' . $finalfilter . '
             )
@@ -230,11 +229,10 @@ class module_report_download extends module_report
 
         $sql = '
             SELECT record.record_id as id, SUM(1) AS nb, subdef.name
-            FROM ( log
-                INNER JOIN log_docs as log_date  ON log.id = log_date.log_id
-                INNER JOIN record    ON log_date.record_id = record.record_id
-                INNER JOIN subdef    ON subdef.record_id = record.record_id
-            )
+            FROM ( log )
+                INNER JOIN log_docs as log_date  (ON log.id = log_date.log_id)
+                INNER JOIN record    ON (log_date.record_id = record.record_id)
+                INNER JOIN subdef    ON (subdef.record_id = record.record_id)
             WHERE (
                     ' . $finalfilter . '
             )
diff --git a/lib/classes/module/report/nav.php b/lib/classes/module/report/nav.php
index 0f4ed74689..1872faffd7 100644
--- a/lib/classes/module/report/nav.php
+++ b/lib/classes/module/report/nav.php
@@ -74,7 +74,8 @@ class module_report_nav extends module_report
         $sql = '
             SELECT
                 SUM(1) AS total
-            FROM log
+            FROM (log)
+                INNER JOIN log_colls ON (log.id = log_colls.log_id)
             WHERE (' . $report_filter['sql'] . '
                 AND nav != TRIM(\'\')
             )
diff --git a/lib/classes/module/report/question.php b/lib/classes/module/report/question.php
index 21a3d1977e..efca812b99 100644
--- a/lib/classes/module/report/question.php
+++ b/lib/classes/module/report/question.php
@@ -30,7 +30,6 @@ class module_report_question extends module_report
         , 'fonction'    => 'log.fonction'
         , 'site'        => 'log.site'
         , 'sit_session' => 'log.sit_session'
-        , 'coll_list'   => 'log.coll_list'
         , 'appli'       => 'log.appli'
         , 'ip'          => 'log.ip'
     );
diff --git a/lib/classes/module/report/sqlaction.php b/lib/classes/module/report/sqlaction.php
index b43c1090db..63737750d5 100644
--- a/lib/classes/module/report/sqlaction.php
+++ b/lib/classes/module/report/sqlaction.php
@@ -52,13 +52,13 @@ class module_report_sqlaction extends module_report_sql implements module_report
 
             $this->sql =
                 "
-         SELECT log.usrid, log.user , d.final as getter,  d.record_id, d.date, s.*
-         FROM (log_docs as d
-         INNER JOIN log ON " . $site_filter['sql'] . "
-          AND log.id = d.log_id
-         INNER JOIN record ON record.record_id = d.record_id
-         LEFT JOIN subdef as s ON s.record_id=d.record_id and s.name='document')
-         WHERE";
+            SELECT log.usrid, log.user , d.final as getter,  d.record_id, d.date, s.*
+            FROM (log_docs as d)
+               INNER JOIN log ON (" . $site_filter['sql'] . " AND log.id = d.log_id)
+               INNER JOIN log_colls ON (log.id = log_colls.log_id)
+               INNER JOIN record ON (record.record_id = d.record_id)
+               LEFT JOIN subdef as s ON (s.record_id=d.record_id and s.name='document')
+            WHERE";
 
             $this->sql .= $report_filter['sql'] . " AND (d.action = :action)";
 
@@ -83,15 +83,15 @@ class module_report_sqlaction extends module_report_sql implements module_report
             $params = array_merge($params, $site_filter['params'], $report_filter['params'], $record_filter['params']);
 
             $this->sql = "
-        SELECT TRIM(" . $this->getTransQuery($this->groupby) . ")
-          as " . $this->groupby . ",
-         SUM(1) as nombre
-        FROM (log_docs as d
-        INNER JOIN log ON " . $site_filter['sql'] . "
-         AND log.id = d.log_id
-        INNER JOIN record ON record.record_id = d.record_id
-        LEFT JOIN subdef as s ON s.record_id=d.record_id and s.name='document')
-        WHERE ";
+            SELECT TRIM(" . $this->getTransQuery($this->groupby) . ")
+              as " . $this->groupby . ",
+             SUM(1) as nombre
+            FROM (log_docs as d)
+                INNER JOIN log ON (" . $site_filter['sql'] . " AND log.id = d.log_id)
+                INNER JOIN log_colls ON (log.id = log_colls.log_id)
+                INNER JOIN record ON (record.record_id = d.record_id)
+                LEFT JOIN subdef as s ON (s.record_id=d.record_id and s.name='document')
+            WHERE ";
 
             $this->sql .= $report_filter['sql'] . " AND (d.action = :action)";
 
@@ -122,12 +122,13 @@ class module_report_sqlaction extends module_report_sql implements module_report
 
         $sql = "
             SELECT  DISTINCT(" . $this->getTransQuery($field) . ") as val
-            FROM (log_docs as d
-            INNER JOIN log ON (" . $site_filter['sql'] . "
-                AND log.id = d.log_id
-                AND " . $date_filter['sql'] . ")
-            INNER JOIN record ON (record.record_id = d.record_id)
-            LEFT JOIN subdef as s ON (s.record_id=d.record_id AND s.name='document'))
+            FROM (log_docs as d)
+                INNER JOIN log ON (" . $site_filter['sql'] . "
+                    AND log.id = d.log_id
+                    AND " . $date_filter['sql'] . ")
+                INNER JOIN log_colls ON (log.id = log_colls.log_id)
+                INNER JOIN record ON (record.record_id = d.record_id)
+                LEFT JOIN subdef as s ON (s.record_id=d.record_id AND s.name='document')
             WHERE ";
 
         if ($this->filter->getReportFilter()) {
diff --git a/lib/classes/module/report/sqlconnexion.php b/lib/classes/module/report/sqlconnexion.php
index 601755ba4c..2432156f10 100644
--- a/lib/classes/module/report/sqlconnexion.php
+++ b/lib/classes/module/report/sqlconnexion.php
@@ -43,10 +43,10 @@ class module_report_sqlconnexion extends module_report_sql implements module_rep
         log.fonction,
         site,
         sit_session,
-        coll_list,
         appli,
         ip
-       FROM log";
+       FROM log
+        INNER JOIN log_colls ON (log.id = log_colls.log_id)";
 
             $this->sql .= " WHERE " . $report_filter['sql'];
             $this->sql .= $this->filter->getOrderFilter() ? : '';
@@ -59,9 +59,10 @@ class module_report_sqlconnexion extends module_report_sql implements module_rep
                 $this->sql .= $this->filter->getLimitFilter() ? : '';
         } else {
             $this->sql = "
-       SELECT  TRIM(" . $this->getTransQuery($this->groupby) . ")
-              as " . $this->groupby . ", SUM(1) as nb
-       FROM  log  ";
+            SELECT  TRIM(" . $this->getTransQuery($this->groupby) . ")
+                   as " . $this->groupby . ", SUM(1) as nb
+            FROM  (log)
+                INNER JOIN log_colls ON (log.id = log_colls.log_id)";
 
             if ($report_filter['sql'])
                 $this->sql .= " WHERE " . $report_filter['sql'];
@@ -83,8 +84,10 @@ class module_report_sqlconnexion extends module_report_sql implements module_rep
         $report_filter = $this->filter->getReportFilter();
         $params = $report_filter['params'];
 
-        $sql = 'SELECT  DISTINCT(' . $this->getTransQuery($field) . ') as val
-            FROM  log ';
+        $sql = '
+        SELECT  DISTINCT(' . $this->getTransQuery($field) . ') as val
+        FROM (log)
+            INNER JOIN log_colls ON (log.id = log_colls.log_id)';
 
         if ($report_filter['sql'])
             $sql .= ' WHERE ' . $report_filter['sql'];
diff --git a/lib/classes/module/report/sqldownload.php b/lib/classes/module/report/sqldownload.php
index bf0c1d56a2..184127e912 100644
--- a/lib/classes/module/report/sqldownload.php
+++ b/lib/classes/module/report/sqldownload.php
@@ -52,10 +52,10 @@ class module_report_sqldownload extends module_report_sql implements module_repo
          log_docs.record_id,
          log_docs.final,
          log_docs.comment
-       FROM (log
-        INNER JOIN log_docs ON log.id = log_docs.log_id
-        INNER JOIN record ON log_docs.record_id = record.record_id
-       )
+       FROM (log)
+        INNER JOIN log_docs ON (log.id = log_docs.log_id)
+        INNER JOIN log_colls ON (log.id = log_colls.log_id)
+        INNER JOIN record ON (log_docs.record_id = record.record_id)
        WHERE ";
 
             $this->sql .= $report_filters['sql'] ? : '';
@@ -80,49 +80,44 @@ class module_report_sqldownload extends module_report_sql implements module_repo
             if ($name == 'record_id' && $this->on == 'DOC') {
                 $this->sql = '
              SELECT
-              TRIM( ' . $field . ' ) AS ' . $name . ',
-              SUM(1) AS telechargement,
-              record.coll_id,
-              log_docs.final,
-              log_docs.comment,
-              subdef.size,
-              subdef.file,
-              subdef.mime
-             FROM ( log
-              INNER JOIN log_docs ON log.id = log_docs.log_id
-              INNER JOIN record ON log_docs.record_id = record.record_id
-              INNER JOIN subdef ON (log_docs.record_id = subdef.record_id
-               AND subdef.name = log_docs.final
-              )
-             )
+                TRIM( ' . $field . ' ) AS ' . $name . ',
+                SUM(1) AS telechargement,
+                record.coll_id,
+                log_docs.final,
+                log_docs.comment,
+                subdef.size,
+                subdef.file,
+                subdef.mime
+             FROM (log)
+                INNER JOIN log_docs ON (log.id = log_docs.log_id)
+                INNER JOIN log_colls ON (log.id = log_colls.log_id)
+                INNER JOIN record ON (log_docs.record_id = record.record_id)
+                INNER JOIN subdef ON (log_docs.record_id = subdef.record_id AND subdef.name = log_docs.final)
              WHERE
             ';
             } elseif ($this->on == 'DOC') {
                 $this->sql = '
-           SELECT
-            TRIM(' . $field . ') AS ' . $name . ',
-            SUM(1) AS telechargement
-           FROM ( log
-            INNER JOIN log_docs ON log.id = log_docs.log_id
-            INNER JOIN record ON log_docs.record_id = record.record_id
-            INNER JOIN subdef ON ( log_docs.record_id = subdef.record_id
-             AND subdef.name = log_docs.final
-            )
-           )
-           WHERE
-                ';
+                SELECT
+                    TRIM(' . $field . ') AS ' . $name . ',
+                    SUM(1) AS telechargement
+                FROM ( log )
+                    INNER JOIN log_docs ON (log.id = log_docs.log_id)
+                    INNER JOIN log_colls ON (log.id = log_colls.log_id)
+                    INNER JOIN record ON (log_docs.record_id = record.record_id)
+                    INNER JOIN subdef ON ( log_docs.record_id = subdef.record_id AND subdef.name = log_docs.final)
+                WHERE';
             } else {
 
                 $this->sql = '
-         SELECT
-          TRIM( ' . $this->getTransQuery($this->groupby) . ') AS ' . $name . ',
-          SUM(1) AS nombre
-         FROM ( log
-          INNER JOIN log_docs ON log.id = log_docs.log_id
-          INNER JOIN record ON log_docs.record_id = record.record_id
-          INNER JOIN subdef ON (record.record_id = subdef.record_id AND subdef.name = "document")
-         )
-         WHERE ';
+                SELECT
+                    TRIM( ' . $this->getTransQuery($this->groupby) . ') AS ' . $name . ',
+                    SUM(1) AS nombre
+                FROM ( log )
+                    INNER JOIN log_docs ON (log.id = log_docs.log_id)
+                    INNER JOIN log_colls ON (log.id = log_colls.log_id)
+                    INNER JOIN record ON (log_docs.record_id = record.record_id)
+                    INNER JOIN subdef ON (record.record_id = subdef.record_id AND subdef.name = "document")
+                WHERE ';
             }
 
             $this->sql .= $report_filters['sql'];
@@ -159,10 +154,11 @@ class module_report_sqldownload extends module_report_sql implements module_repo
 
         $sql = '
             SELECT  DISTINCT( ' . $this->getTransQuery($field) . ' ) AS val
-            FROM (log
-                INNER JOIN log_docs ON log.id = log_docs.log_id
-                INNER JOIN record ON log_docs.record_id = record.record_id
-                INNER JOIN subdef ON log_docs.record_id = subdef.record_id)
+            FROM (log)
+                INNER JOIN log_docs ON (log.id = log_docs.log_id)
+                INNER JOIN log_colls ON (log.id = log_colls.log_id)
+                INNER JOIN record ON (log_docs.record_id = record.record_id)
+                INNER JOIN subdef ON (log_docs.record_id = subdef.record_id)
             WHERE ';
 
         $sql .= $report_filters['sql'];
diff --git a/lib/classes/module/report/sqlfilter.php b/lib/classes/module/report/sqlfilter.php
index c95265acea..14d54e056d 100644
--- a/lib/classes/module/report/sqlfilter.php
+++ b/lib/classes/module/report/sqlfilter.php
@@ -47,10 +47,12 @@ class module_report_sqlfilter
     {
         $ret = array('sql'    => '', 'params' => array());
         $coll_filter = array();
-        foreach (explode(',', $list_coll_id) as $val) {
-            $coll_filter [] = " position('," . phrasea::collFromBas($app, $val) . ",' in concat(',' ,coll_list, ',')) > 0 ";
+        foreach (array_filter(explode(',', $list_coll_id)) as $val) {
+            if( false !== $val = phrasea::collFromBas($app, $val)) {
+                $coll_filter[] =  'log_colls.coll_id = '.phrasea::collFromBas($app, $val);
+            }
         }
-        $ret['sql'] = implode(' OR ', $coll_filter);
+        $ret['sql'] = ' (' . implode(' OR ', array_unique($coll_filter)) . ') ';
 
         return $ret;
     }
@@ -75,7 +77,7 @@ class module_report_sqlfilter
             $params = array_merge($params, $this->filter['user']['params']);
         }
         if ($this->filter['collection']) {
-            $finalfilter .= '(' . $this->filter['collection']['sql'] . ') AND ';
+            $finalfilter .= $this->filter['collection']['sql'] . ' AND ';
             $params = array_merge($params, $this->filter['collection']['params']);
         }
         $finalfilter .= ' log.site = :log_site';
@@ -86,7 +88,7 @@ class module_report_sqlfilter
     public function getGvSitFilter()
     {
         $params = array();
-        $sql = '';
+        $sql = '1';
 
         if ($this->app['phraseanet.registry']->is_set('GV_sit')) {
             $sql = 'log.site = :log_site_gv_filter';
@@ -190,12 +192,16 @@ class module_report_sqlfilter
             return;
         }
 
-        $tab = explode(",", $report->getListCollId());
+        $tab = array_filter(explode(",", $report->getListCollId()));
+
         if (count($tab) > 0) {
             foreach ($tab as $val) {
-                $coll_filter[] = " position('," . phrasea::collFromBas($this->app, $val) . ",' in concat(',' ,coll_list, ',')) > 0 ";
+                if( false !== $val = phrasea::collFromBas($this->app, $val)) {
+                    $coll_filter[] =  'log_colls.coll_id = '.phrasea::collFromBas($this->app, $val);
+                }
             }
-            $this->filter['collection'] = array('sql'    => implode(' OR ', $coll_filter), 'params' => array());
+
+            $this->filter['collection'] = array('sql'    => ' (' . implode(' OR ', array_unique($coll_filter)) . ') ', 'params' => array());
         }
 
         return;
diff --git a/lib/classes/module/report/sqlquestion.php b/lib/classes/module/report/sqlquestion.php
index 6b44c70ecc..f6fdc1c05b 100644
--- a/lib/classes/module/report/sqlquestion.php
+++ b/lib/classes/module/report/sqlquestion.php
@@ -33,21 +33,19 @@ class module_report_sqlquestion extends module_report_sql implements module_repo
         $this->params = $params;
 
         if ($this->groupby == false) {
-            $this->sql =
-                "
-       SELECT
-        log_search.date ddate,
-        search,
-        usrid,
-        user,
-        pays,
-        societe,
-        activite,
-        fonction
-       FROM `log_search`
-       INNER JOIN log
-       ON log.id = log_search.log_id
-       ";
+            $this->sql ="
+            SELECT
+            log_search.date ddate,
+            search,
+            usrid,
+            user,
+            pays,
+            societe,
+            activite,
+            fonction
+            FROM (`log_search`)
+                INNER JOIN log ON (log.id = log_search.log_id)
+                INNER JOIN log_colls ON (log.id = log_colls.log_id)";
 
             $this->sql .= " WHERE " . $report_filter['sql'];
 
@@ -61,13 +59,13 @@ class module_report_sqlquestion extends module_report_sql implements module_repo
             $this->sql .= $this->filter->getLimitFilter() ? : '';
         } else {
             $this->sql = "
-         SELECT
-          TRIM(" . $this->getTransQuery($this->groupby) . ") as " . $this->groupby . ",
-          SUM(1) as nb
-         FROM `log_search`
-         INNER JOIN log
-         ON log.id = log_search.log_id
-         ";
+            SELECT
+                TRIM(" . $this->getTransQuery($this->groupby) . ") as " . $this->groupby . ",
+                SUM(1) as nb
+            FROM (`log_search`)
+                INNER JOIN log ON (log.id = log_search.log_id)
+                INNER JOIN log_colls ON (log.id = log_colls.log_id)
+            ";
 
             $this->sql .= " WHERE " . $report_filter['sql'];
             $this->sql .= " GROUP BY " . $this->groupby;
@@ -90,9 +88,9 @@ class module_report_sqlquestion extends module_report_sql implements module_repo
 
         $sql = "
             SELECT DISTINCT(" . $this->getTransQuery($field) . ") as val
-            FROM `log_search`
-            INNER JOIN log
-            ON log.id = log_search.log_id
+            FROM (`log_search`)
+                INNER JOIN log ON (log.id = log_search.log_id)
+                INNER JOIN log_colls ON (log.id = log_colls.log_id)
             ";
 
         if ($report_filter['sql'])
diff --git a/lib/classes/patch/380a3.class.php b/lib/classes/patch/380a3.class.php
new file mode 100644
index 0000000000..60bc739d18
--- /dev/null
+++ b/lib/classes/patch/380a3.class.php
@@ -0,0 +1,120 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2012 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+use Alchemy\Phrasea\Application;
+
+/**
+ *
+ *
+ * @license     http://opensource.org/licenses/gpl-3.0 GPLv3
+ * @link        www.phraseanet.com
+ */
+class patch_380a3 implements patchInterface
+{
+    /**
+     *
+     * @var string
+     */
+    private $release = '3.8.0.a3';
+
+    /**
+     *
+     * @var Array
+     */
+    private $concern = array(base::DATA_BOX);
+
+    /**
+     *
+     * @return string
+     */
+    public function get_release()
+    {
+        return $this->release;
+    }
+
+    public function require_all_upgrades()
+    {
+        return true;
+    }
+
+    /**
+     *
+     * @return Array
+     */
+    public function concern()
+    {
+        return $this->concern;
+    }
+
+    public function apply(base $databox, Application $app)
+    {
+        $conn = $databox->get_connection();
+        // Count total rows from `log` table to process
+        $stmt = $conn->prepare('
+        SELECT COUNT(l.id) as nb_row
+        FROM log l
+        LEFT JOIN log_colls lc ON (lc.log_id = l.id)
+        WHERE (lc.log_id IS NULL)');
+        $stmt->execute();
+        $row = $stmt->fetch(\PDO::FETCH_ASSOC);
+        $stmt->closeCursor();
+        unset($stmt);
+
+        $remainingRowsToProcess = (int) $row['nb_row'];
+        $failedRows = array();
+
+        do {
+            // Fetch all missing rows from `log_colls` table
+            $stmt = $conn->prepare('SELECT l.id, l.coll_list, lc.* FROM log l LEFT JOIN log_colls lc ON (lc.log_id = l.id) WHERE (lc.log_id IS NULL)');
+            $stmt->execute();
+            $rs = $stmt->fetchAll(\PDO::FETCH_ASSOC);
+            $stmt->closeCursor();
+            unset($stmt);
+
+            $sql = 'INSERT INTO log_colls (log_id, coll_id) VALUES (:log_id, :coll_id)';
+            $stmt = $conn->prepare($sql);
+
+           foreach ($rs as $row) {
+               // Clean fetched coll ids
+                $collIds = array_filter(array_map(function($collId) {
+                        return (int) $collId;
+                    }, explode(',', (string) $row['coll_list'])), function($collId) {
+                    return $collId > 0;
+                });
+                // Start mysql transaction to avoid case where only a part of coll ids are inserted in `log_colls`
+                $conn->beginTransaction();
+                try {
+                    // For each collection id insert a new row
+                    foreach ($collIds as $collId) {
+                        $stmt->execute(array(
+                            ':log_id'  => (int) $row['id'],
+                            ':coll_id' => $collId
+                        ));
+                        $stmt->closeCursor();
+                    }
+                } catch (\Exception $e) {
+                    // Rollback if something failed
+                    $failedRows[] = $row['id'];
+                    $conn->rollBack();
+                    // Go to next row
+                    continue;
+                }
+                // Once all collection ids inserted commit
+                $conn->commit();
+                $remainingRowsToProcess--;
+            }
+        } while (count($failedRows) !== $remainingRowsToProcess);
+
+        unset($conn, $stmt);
+
+        return count($failedRows) === 0;
+    }
+}
diff --git a/lib/conf.d/bases_structure.xml b/lib/conf.d/bases_structure.xml
index a1f8102ec2..92e5c7e58b 100644
--- a/lib/conf.d/bases_structure.xml
+++ b/lib/conf.d/bases_structure.xml
@@ -5123,16 +5123,6 @@
 
             <comment></comment>
           </field>
-          <field>
-            <name>coll_list</name>
-            <type>text</type>
-            <null></null>
-            <extra></extra>
-
-
-            <default></default>
-            <comment></comment>
-          </field>
           <field>
             <name>nav</name>
             <type>varchar(64)</type>
@@ -5272,6 +5262,46 @@
         </indexes>
         <engine>InnoDB</engine>
       </table>
+
+      <table name="log_colls">
+        <fields>
+          <field>
+            <name>id</name>
+            <type>int(11) unsigned</type>
+            <null></null>
+            <extra>auto_increment</extra>
+            <default></default>
+            <comment></comment>
+          </field>
+          <field>
+            <name>log_id</name>
+            <type>int(11) unsigned</type>
+            <null></null>
+            <extra></extra>
+            <default></default>
+            <comment></comment>
+          </field>
+          <field>
+            <name>coll_id</name>
+            <type>int(11) unsigned</type>
+            <null></null>
+            <extra></extra>
+            <default></default>
+            <comment></comment>
+          </field>
+        </fields>
+        <indexes>
+          <index>
+            <name>PRIMARY</name>
+            <type>PRIMARY</type>
+            <fields>
+              <field>id</field>
+            </fields>
+          </index>
+        </indexes>
+        <engine>InnoDB</engine>
+      </table>
+
       <table name="log_search">
         <fields>
           <field>
diff --git a/tests/classes/report/reportTest.php b/tests/classes/report/reportTest.php
index 2e55173fd6..cd35cf7eea 100644
--- a/tests/classes/report/reportTest.php
+++ b/tests/classes/report/reportTest.php
@@ -168,7 +168,6 @@ class reportTest extends PhraseanetPHPUnitAuthenticatedAbstract
           log.fonction,
           site,
           sit_session,
-          coll_list,
           appli,
           ip
          FROM log ');