diff --git a/phpgwapi/inc/class.sessions.inc.php b/phpgwapi/inc/class.sessions.inc.php
index 6f9fab67c3..08fa808b8a 100644
--- a/phpgwapi/inc/class.sessions.inc.php
+++ b/phpgwapi/inc/class.sessions.inc.php
@@ -342,7 +342,11 @@
 			}
 			$GLOBALS['egw_info']['user']['kp3'] = $this->kp3;
 
-			$this->update_dla();
+			// allow xajax / notifications to not update the dla, so sessions can time out again
+			if (!isset($GLOBALS['egw_info']['flags']['no_dla_update']) || !$GLOBALS['egw_info']['flags']['no_dla_update'])
+			{
+				$this->update_dla();
+			}
 			$this->account_id = $GLOBALS['egw']->accounts->name2id($this->account_lid,'account_lid','u');
 			if (!$this->account_id)
 			{
@@ -1431,7 +1435,22 @@
 		* @return bool did it suceed?
 		*/
 		function destroy($sessionid, $kp3)
-		{}
+		{
+			if (!$sessionid && $kp3)
+			{
+				return False;
+			}
+			$this->log_access($this->sessionid);	// log logout-time
+
+			error_log(__METHOD__."($sessionid,$kp3) parent::destroy()=$ret");
+
+			$GLOBALS['egw']->hooks->process(array(
+				'location'  => 'session_destroyed',
+				'sessionid' => $sessionid,
+			),'',true);	// true = run hooks from all apps, not just the ones the current user has perms to run
+
+			return true;
+		}
 
 		/**
 		* Functions for appsession data and session cache
diff --git a/phpgwapi/inc/class.sessions_php4.inc.php b/phpgwapi/inc/class.sessions_php4.inc.php
index 6c8eb9d30e..bad8ebf441 100644
--- a/phpgwapi/inc/class.sessions_php4.inc.php
+++ b/phpgwapi/inc/class.sessions_php4.inc.php
@@ -133,13 +133,10 @@ class sessions extends sessions_
 
 	function destroy($sessionid, $kp3)
 	{
-		if (!$sessionid && $kp3)
+		if (!parent::destroy($sessionid,$kp3))
 		{
-			return False;
+			return false;
 		}
-
-		$this->log_access($this->sessionid);	// log logout-time
-
 		// Only do the following, if where working with the current user
 		if ($sessionid == $GLOBALS['egw_info']['user']['sessionid'])
 		{
diff --git a/xajax.php b/xajax.php
index 44479e1147..45a33982bc 100644
--- a/xajax.php
+++ b/xajax.php
@@ -103,6 +103,7 @@ function doXMLHTTP()
 			'disable_Template_class'	=> True,
 			'autocreate_session_callback' => 'xajax_redirect',
 			'no_exception_handler' => true,	// we already installed our own
+			'no_dla_update' => $appName == 'notifications',	// otherwise session never time out
 		)
 	);
 	include('./header.inc.php');