It's because some users post the link without the "www" part, and if your cookies already use set with the "www" part there, it takes you to the logon screen.
The best solution is when users make links to other places inside of BrainKing, is just do it like this:
<A.HREF="/game/ShowFellowship?fid=100"> link <./a>
(gem) Hvis du er interesseret i udviklingen af en turnering du spiller i, kan du diskutere med dine modspillere i denne turnerings forum. (HelenaTanein) (vis alle tips)