A database error has occurred.  Did you forget to run maintenance/update.php after upgrading?  See: http://www.mediawiki.org/wiki/Manual:Upgrading#Run_the_update_script<br />
Query: REPLACE INTO `objectcache` (keyname,value,exptime) VALUES ('db398952879:messages:de:lock','Ë´2´\0','20140801014100')<br />
Function: SqlBagOStuff::set<br />
Error: 1142 INSERT command denied to user 'dbo398952879'@'212.227.109.183' for table 'objectcache' (db398952879.db.1and1.com)<br />