Index: kernel/application.php
===================================================================
--- kernel/application.php	(revision 14184)
+++ kernel/application.php	(working copy)
@@ -2191,7 +2191,6 @@
 			}
 		}
 
-		ob_end_flush();
 		// session expiration is called from session initialization,
 		// that's why $this->Session may be not defined here
 		$session =& $this->Application->recallObject('Session');
@@ -2199,6 +2198,8 @@
 
 		$this->HandleEvent( new kEvent('adm:OnBeforeShutdown') );
 		$session->SaveData();
+
+		ob_end_flush();
 		exit;
 	}