This June 5, AM, I am having to log-in, then go to a sub forum (4th gen) and log-in again. and again. Each time I go to a different sub, I have to log-in. XP Pro, IE7, P4
Have you tried clearing cache, cookies and resetting your browser? That's the being in IT side of me asking when users say they have web problems.
I had the same issue running Vista Premium with IE7, then I upgrade to Win7 Ultimate with IE8 and haven't had that issue. My laptop with Vista Premium and IE7 works fine though.