Index: trunk/kernel/include/usersession.php
===================================================================
diff -u -r2000 -r2082
--- trunk/kernel/include/usersession.php	(.../usersession.php)	(revision 2000)
+++ trunk/kernel/include/usersession.php	(.../usersession.php)	(revision 2082)
@@ -442,9 +442,10 @@
           			FROM '.$prefix.'PortalUser pu
           			LEFT JOIN '.$prefix.'UserGroup ug USING (PortalUserId)
         	   		LEFT JOIN '.$prefix.'PortalGroup pg ON ug.GroupId = pg.GroupId
-       				WHERE ('.$key_clause.') AND (pu.Status = 1) AND (pu.Password = %2$s OR MD5(pu.Password) = %2$s OR pu.Password = MD5(%2$s) )          
+       				WHERE ('.$key_clause.') AND (pu.Status = 1) AND (pu.Password = %2$s OR MD5(pu.Password) = %2$s OR pu.Password = MD5(%2$s) ) AND
+       					  ( (ug.MembershipExpires IS NULL) OR ( ug.MembershipExpires >= UNIX_TIMESTAMP() ) )
 					ORDER BY ug.PrimaryGroup DESC, pg.Personal DESC';
-
+					
         	$result = $db->Execute( sprintf($sql, $db->qstr($userLogin), $db->qstr($userPassword) ) );
 
         	if($result === false)