diff --git a/lib/Alchemy/Phrasea/Core/Version.php b/lib/Alchemy/Phrasea/Core/Version.php
index ffc74f47b2..060f4eb6b2 100644
--- a/lib/Alchemy/Phrasea/Core/Version.php
+++ b/lib/Alchemy/Phrasea/Core/Version.php
@@ -18,7 +18,7 @@ namespace Alchemy\Phrasea\Core;
  */
 class Version
 {
-    protected static $number = '3.9.0.a3';
+    protected static $number = '3.9.0.a4';
     protected static $name = 'Diplodocus';
 
     public static function getNumber()
diff --git a/lib/Doctrine/Entities/UserSetting.php b/lib/Doctrine/Entities/UserSetting.php
new file mode 100644
index 0000000000..544bae7f20
--- /dev/null
+++ b/lib/Doctrine/Entities/UserSetting.php
@@ -0,0 +1,191 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2013 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Entities;
+
+use Alchemy\Phrasea\Application;
+use Doctrine\ORM\Mapping as ORM;
+use Gedmo\Mapping\Annotation as Gedmo;
+
+/**
+ * @ORM\Table(name="UserSettings",
+ *      uniqueConstraints={
+ *          @ORM\UniqueConstraint(name="unique_setting",columns={"usr_id", "name"})
+ *      }
+ * )
+ * @ORM\Entity(repositoryClass="Repositories\UserSettingRepository")
+ */
+class UserSetting
+{
+    /**
+     * @ORM\Column(type="integer")
+     * @ORM\Id
+     * @ORM\GeneratedValue
+     */
+    private $id;
+
+    /**
+     * @ORM\Column(type="integer", name="usr_id")
+     */
+    private $usrId;
+
+    /**
+     * @ORM\Column(type="string", length=64)
+     */
+    private $name;
+
+    /**
+     * @ORM\Column(type="string", length=128, nullable=true)
+     */
+    private $value;
+
+    /**
+     * @Gedmo\Timestampable(on="create")
+     * @ORM\Column(type="datetime")
+     */
+    private $created;
+
+    /**
+     * @Gedmo\Timestampable(on="update")
+     * @ORM\Column(type="datetime")
+     */
+    private $updated;
+
+    /**
+     * @return integer
+     */
+    public function getId()
+    {
+        return $this->id;
+    }
+
+    /**
+     * @return integer
+     */
+    public function getUsrId()
+    {
+        return $this->usrId;
+    }
+
+    /**
+     * @param integer $usrId
+     *
+     * @return UserSetting
+     */
+    public function setUsrId($usrId)
+    {
+        $this->usrId = $usrId;
+
+        return $this;
+    }
+
+    /**
+     * @param \Alchemy\Phrasea\Application $app
+     *
+     * @return string
+     */
+    public function getUser(Application $app)
+    {
+        return \User_Adapter::getInstance($this->usrId, $app);
+    }
+
+    /**
+     * @param \User_Adapter $user
+     *
+     * @return UserSetting
+     */
+    public function setUser(\User_Adapter $user)
+    {
+        $this->setUsrId($user->get_id());
+
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * @param string $name
+     *
+     * @return UserSetting
+     */
+    public function setName($name)
+    {
+        $this->name = $name;
+
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getValue()
+    {
+        return $this->value;
+    }
+
+    /**
+     * @param string $value
+     *
+     * @return UserSetting
+     */
+    public function setValue($value)
+    {
+        $this->value = $value;
+
+        return $this;
+    }
+
+    /**
+     * @return \DateTime
+     */
+    public function getCreated()
+    {
+        return $this->created;
+    }
+
+    /**
+     * @param \DateTime  $created
+     *
+     * @return UserSetting
+     */
+    public function setCreated(\DateTime $created)
+    {
+        $this->created = $created;
+
+        return $this;
+    }
+
+    /**
+     * @return \DateTime
+     */
+    public function getUpdated()
+    {
+        return $this->updated;
+    }
+
+    /**
+     * @param \DateTime $updated
+     *
+     * @return UserSetting
+     */
+    public function setUpdated(\DateTime $updated)
+    {
+        $this->updated = $updated;
+
+        return $this;
+    }
+}
diff --git a/lib/Doctrine/Repositories/UserSettingRepository.php b/lib/Doctrine/Repositories/UserSettingRepository.php
new file mode 100644
index 0000000000..872f603c7f
--- /dev/null
+++ b/lib/Doctrine/Repositories/UserSettingRepository.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace Repositories;
+
+use Doctrine\ORM\EntityRepository;
+
+/**
+ * UserSettingRepository
+ *
+ * This class was generated by the Doctrine ORM. Add your own custom
+ * repository methods below.
+ */
+class UserSettingRepository extends EntityRepository
+{
+}
diff --git a/lib/classes/patch/3904.php b/lib/classes/patch/3904.php
new file mode 100644
index 0000000000..f2543385e6
--- /dev/null
+++ b/lib/classes/patch/3904.php
@@ -0,0 +1,85 @@
+<?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;
+use Entities\UserSetting;
+
+class patch_3904 implements patchInterface
+{
+    /** @var string */
+    private $release = '3.9.0.a4';
+
+    /** @var array */
+    private $concern = array(base::APPLICATION_BOX);
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get_release()
+    {
+        return $this->release;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function require_all_upgrades()
+    {
+        return false;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function concern()
+    {
+        return $this->concern;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function apply(base $appbox, Application $app)
+    {
+        $conn = $app['phraseanet.appbox']->get_connection();
+        $sql = 'SELECT * FROM usr_settings';
+        $stmt = $conn->prepare($sql);
+        $stmt->execute();
+        $rs = $stmt->fetchAll(\PDO::FETCH_ASSOC);
+        $stmt->closeCursor();
+
+        $n = 0;
+        $em = $app['EM'];
+
+        foreach ($rs as $row) {
+            if (substr($row['prop'], 0, 13) === "notification_") {
+                continue;
+            }
+
+            $userSetting = new UserSetting();
+            $userSetting->setName($row['prop']);
+            $userSetting->setValue($row['value']);
+            $userSetting->setUsrId($row['usr_id']);
+
+            $em->persist($userSetting);
+
+            $n++;
+
+            if ($n % 1000 === 0) {
+                $em->flush();
+                $em->clear();
+            }
+        }
+
+        $em->flush();
+        $em->clear();
+    }
+}