The configuration: MediaWiki 1.15.1 PHP 5.2.12 (cgi) MySQL 5.0.81-log Website www.wikivalley.com Clean installation with "Short URL" rewrite rules in .htaccess The problem: Apparently , every URL for non-defined article like http://www.wikivalley/com/wiki/SomePage redirected to http://wikivalley/com/wiki/SomePage ( not omission of WWW prefix). Also http://www.wikivalley.com is redirected to http://wikivalley.com/wiki/Main_Page . I put a workaround using rewrite rules , but every such request results in two back and force "301 Redirect" calls ( + about 1 second latency). Did i missed something in configuration? Any help is deeply appreciated! Stas