Index: t3lib/class.t3lib_beuserauth.php
===================================================================
--- t3lib/class.t3lib_beuserauth.php	(Revision 6726)
+++ t3lib/class.t3lib_beuserauth.php	(Arbeitskopie)
@@ -215,10 +215,12 @@
 					$this->emailAtLogin();		// email at login - if option set.
 				} else {
 					t3lib_BEfunc::typo3PrintError ('Login-error','TYPO3 is in maintenance mode at the moment. Only administrators are allowed access.',0);
+					$this->logoff();
 					exit;
 				}
 			} else {
 				t3lib_BEfunc::typo3PrintError ('Login-error','IP locking prevented you from being authorized. Can\'t proceed, sorry.',0);
+				$this->logoff();
 				exit;
 			}
 		}