1. When you log in, do you check the [ ] Remember me? box? I keep mine checked, so I get logged back in seamlessly even when I go for more than an hour before loading a new page.

2. Your browser is set to accept cookies, isn't it? Mine shows several from both psychcentral.com and forums.psychcentral.com.

3. Once in a while when I run an anti-spyware scan, even though I didn't ask for it I find that some of my cookies have apparently been cleared. I then have to log back into sites (including this one) that usually "remember me". Could you have something running on your system that clears your cookies or logs you out even during a session?

I hope some of this helps you identify and fix your problem.