diff --git a/lib/private/server.php b/lib/private/server.php
index 77c3732a9c..bee70dec2d 100644
--- a/lib/private/server.php
+++ b/lib/private/server.php
@@ -69,10 +69,18 @@ class Server extends SimpleContainer implements IServerContainer {
 			return new Root($manager, $view, $user);
 		});
 		$this->registerService('UserManager', function($c) {
-			return new \OC\User\Manager();
+			/**
+			 * @var SimpleContainer $c
+			 * @var \OC\AllConfig $config
+			 */
+			$config = $c->query('AllConfig');
+			return new \OC\User\Manager($config);
 		});
 		$this->registerService('UserSession', function($c) {
-			/** @var $c SimpleContainer */
+			/**
+			 * @var SimpleContainer $c
+			 * @var \OC\User\Manager $manager
+			 */
 			$manager = $c->query('UserManager');
 			$userSession = new \OC\User\Session($manager, \OC::$session);
 			$userSession->listen('\OC\User', 'preCreateUser', function ($uid, $password) {
diff --git a/lib/private/user/manager.php b/lib/private/user/manager.php
index 703c8cd741..cf83a75ba2 100644
--- a/lib/private/user/manager.php
+++ b/lib/private/user/manager.php
@@ -35,7 +35,16 @@ class Manager extends PublicEmitter {
 	 */
 	private $cachedUsers = array();
 
-	public function __construct() {
+	/**
+	 * @var \OC\AllConfig $config
+	 */
+	private $config;
+
+	/**
+	 * @param \OC\AllConfig $config
+	 */
+	public function __construct($config = null) {
+		$this->config = $config;
 		$cachedUsers = $this->cachedUsers;
 		$this->listen('\OC\User', 'postDelete', function ($user) use (&$cachedUsers) {
 			$i = array_search($user, $cachedUsers);
@@ -103,7 +112,7 @@ class Manager extends PublicEmitter {
 		if (isset($this->cachedUsers[$uid])) {
 			return $this->cachedUsers[$uid];
 		}
-		$this->cachedUsers[$uid] = new User($uid, $backend, $this);
+		$this->cachedUsers[$uid] = new User($uid, $backend, $this, $this->config);
 		return $this->cachedUsers[$uid];
 	}
 
@@ -141,7 +150,7 @@ class Manager extends PublicEmitter {
 	 */
 	public function checkPassword($loginname, $password) {
 		foreach ($this->backends as $backend) {
-			if($backend->implementsActions(\OC_USER_BACKEND_CHECK_PASSWORD)) {
+			if ($backend->implementsActions(\OC_USER_BACKEND_CHECK_PASSWORD)) {
 				$uid = $backend->checkPassword($loginname, $password);
 				if ($uid !== false) {
 					return $this->getUserObject($uid, $backend);
@@ -234,7 +243,7 @@ class Manager extends PublicEmitter {
 		// Allowed are: "a-z", "A-Z", "0-9" and "_.@-"
 		if (preg_match('/[^a-zA-Z0-9 _\.@\-]/', $uid)) {
 			throw new \Exception('Only the following characters are allowed in a username:'
-			. ' "a-z", "A-Z", "0-9", and "_.@-"');
+				. ' "a-z", "A-Z", "0-9", and "_.@-"');
 		}
 		// No empty username
 		if (trim($uid) == '') {
diff --git a/lib/private/user/user.php b/lib/private/user/user.php
index b4f33fa73c..ef5364cbf7 100644
--- a/lib/private/user/user.php
+++ b/lib/private/user/user.php
@@ -42,12 +42,18 @@ class User {
 	 */
 	private $home;
 
+	/**
+	 * @var \OC\AllConfig $config
+	 */
+	private $config;
+
 	/**
 	 * @param string $uid
 	 * @param \OC_User_Backend $backend
-	 * @param Emitter $emitter
+	 * @param \OC\Hooks\Emitter $emitter
+	 * @param \OC\AllConfig $config
 	 */
-	public function __construct($uid, $backend, $emitter = null) {
+	public function __construct($uid, $backend, $emitter = null, $config = null) {
 		$this->uid = $uid;
 		if ($backend and $backend->implementsActions(OC_USER_BACKEND_GET_DISPLAYNAME)) {
 			$this->displayName = $backend->getDisplayName($uid);
@@ -56,8 +62,13 @@ class User {
 		}
 		$this->backend = $backend;
 		$this->emitter = $emitter;
-		$enabled = \OC_Preferences::getValue($uid, 'core', 'enabled', 'true'); //TODO: DI for OC_Preferences
-		$this->enabled = ($enabled === 'true');
+		$this->config = $config;
+		if ($this->config) {
+			$enabled = $this->config->getUserValue($uid, 'core', 'enabled', 'true');
+			$this->enabled = ($enabled === 'true');
+		} else {
+			$this->enabled = true;
+		}
 	}
 
 	/**
@@ -141,8 +152,10 @@ class User {
 		if (!$this->home) {
 			if ($this->backend->implementsActions(\OC_USER_BACKEND_GET_HOME) and $home = $this->backend->getHome($this->uid)) {
 				$this->home = $home;
+			} elseif ($this->config) {
+				$this->home = $this->config->getSystemValue('datadirectory') . '/' . $this->uid;
 			} else {
-				$this->home = \OC_Config::getValue("datadirectory", \OC::$SERVERROOT . "/data") . '/' . $this->uid; //TODO switch to Config object once implemented
+				$this->home = \OC::$SERVERROOT . '/data/' . $this->uid;
 			}
 		}
 		return $this->home;
@@ -175,7 +188,11 @@ class User {
 	 * @return bool
 	 */
 	public function canChangeDisplayName() {
-		return $this->backend->implementsActions(\OC_USER_BACKEND_SET_DISPLAYNAME);
+		if ($this->config and $this->config->getSystemValue('allow_user_to_change_display_name') === false) {
+			return false;
+		} else {
+			return $this->backend->implementsActions(\OC_USER_BACKEND_SET_DISPLAYNAME);
+		}
 	}
 
 	/**
@@ -194,7 +211,9 @@ class User {
 	 */
 	public function setEnabled($enabled) {
 		$this->enabled = $enabled;
-		$enabled = ($enabled) ? 'true' : 'false';
-		\OC_Preferences::setValue($this->uid, 'core', 'enabled', $enabled);
+		if ($this->config) {
+			$enabled = ($enabled) ? 'true' : 'false';
+			$this->config->setUserValue($this->uid, 'core', 'enabled', $enabled);
+		}
 	}
 }
diff --git a/tests/lib/user/user.php b/tests/lib/user/user.php
index 0bbcda013c..3f90432c6b 100644
--- a/tests/lib/user/user.php
+++ b/tests/lib/user/user.php
@@ -9,6 +9,7 @@
 
 namespace Test\User;
 
+use OC\AllConfig;
 use OC\Hooks\PublicEmitter;
 
 class User extends \PHPUnit_Framework_TestCase {
@@ -205,7 +206,9 @@ class User extends \PHPUnit_Framework_TestCase {
 			->method('implementsActions')
 			->will($this->returnValue(false));
 
-		$user = new \OC\User\User('foo', $backend);
+		$allConfig = new AllConfig();
+
+		$user = new \OC\User\User('foo', $backend, null, $allConfig);
 		$this->assertEquals(\OC_Config::getValue("datadirectory", \OC::$SERVERROOT . "/data") . '/foo', $user->getHome());
 	}