For some reason, blogs with URLs containing a "." don't work correctly. (e.g. http://www.mywpmu.com/john.smith). Blog content is loaded, but not the theme, and wp-admin is not found after logging in.
When I rename the blog to http://www.mywpmu.com/johnsmith , all is fine. My guess is that this is a .htaccess issue, but since I'm no good at regular expressions, I'm at a loss. Ideas, anyone?
(They would like to have URLs such as http://www.mywpmu.com/firstname.lastname) so I'm trying.