strange problem here with my WordPress 18.104.22.168 on modified KubrickTheme ( http://www.qwertzwerk.de ). Everything is fine so far, permalinks (/%day%/%monthnum%/%year%/%postname%/) do work, even the daily archive picked from the calendar is working.
But when I click on the monthly archive (e.g. May 2005), the link result in a 404-page! The german support-forum for WordPress couldn't help me out, but maybe you can.
I've tried to cleanup the .htaccess already, actualized the permalinks again - but nothing has changed. A day ago I moved on the same webspace to another domain-name (from http://www.umeon.de/QWERTZwerk to http://www.QWERTZwerk.de), but the folder WordPress is in hasn't changed at any time! I've also switched all the URL-Relations with my PHP-Admin in the Database and so on ... still the same problem.
I would be very happy and thankful if you can help me out.