Auth not working properly when loading new page, and you need to be authed

Hi! Im using AUTH 2.1.3 DB 1.7.5 PEAR 1.3.5. I have this odd problem which I cant identify. Everything is working fine except for one thing. Im using two frames (yes, I too dont like frames, but...). In one of the them there are links that show up only when $session->getAuth() is true. I login, the links show up, but when I click the links to load a page into the other frame (which checks if you are logged in), I only get the internal login again. Then if I reload page, and click the link again, everything is fine. Does anyone know what causes this? I tried to look at earlier posts, but I couldnt find anything similar. Please help me as Ive been stuck with this problem for a couple of weeks... :-\ TØ Amundsen