Quickie: Case Insensitive WordPress Login
Do you have a locked down WordPress site that has a case-sensitive login even though the Googles are telling you that in WordPress 2.8 they went case-insensitive? Most likely you have John Kolbert’s nice Absolute Privacy plugin installed. It just needs a minor fix.
Edit absolute_privacy.php. Easiest way is through the admin interface under Edit Plugins. Change this line:
if ( !$user || ($user->user_login != $username) ) {
To this:
if ( !$user || (strtolower($user->user_login) != strtolower($username)) ) {
Now you can log in with whatever case you like.

