I am experiencing the same problem with Administrator login.

Everything is perfect with account login (the cookie is created, the menu on the left change showing the logout button).

When I successfully login as an administrator nothing happens (the cookie is not created, the menu on the left does not change, I am not redirected to any page).

I thing it's a problem with one of the three admin tables, because if I set logout.php as admin_app_path I get redirected.

Help !!!

WinXP/Apache