[Logician]

This is one of the most common problem of vb..

Except rare cases like buggy vb version or AOL issues, most important reason of this behavior is because of wrong user settings.

If user enabled cookies in vb settings (which is default when you register) but his browser/firewall/spyware software etc. are rejecting cookies (which is default in Windows XP Internet Explorer 6.x) this happens all the time. Users logges in successfully but since vb can not put a cookie into his computer as he requested in his USER CP settings, the next page he visited do not recognize him as logged in user.

The solution is easy: Either set your browser/firewall etc. to accept cookies or set your vb settings not to use cookies. Latter might be tiresome to try as you will constantly get no permission page until you reach the usercp settings section but with reloging in everypage you can manage it. Or admin of the board can change your setting in admin cp user section..