This is the message I receive (and yes, I cleared my browser cache ;-):
Warning: mysql_pconnect() [function.mysql-pconnect]: Access denied for user: 'wikiuser@localhost.localdomain' (Using password: YES) in /usr/local/apache/htdocs-de/w/DatabaseFunctions.php on line 28 Konnte keine Verbindung zur Datenbank auf 127.0.0.1 herstellen
Access denied for user: 'wikiuser@localhost.localdomain' (Using password: YES)
If this error persists after reloading and clearing your browser cache, please notify the Wikipedia developers.