Similar to this thread (http://www.amember.com/forum/showthread.php?t=3503), but with a slight twist. When a user logs into our site under the amember login, they don't receive any problems outright. However, if they let their session timeout, the system doesn't allow them to log back in; they only receive the "You are not authorized to view this page. Please log in." message after submitting their account information again. If they log out before timing out, they can log back in with no problem. It's only the timing out. Ideas?
Please try to edit file mambo/configuration.php and change $mosConfig_lifetime = '900'; to $mosConfig_lifetime = '9000';