It's like this.
I log into my membership.
Then I go to my comic to either update or review the comments. No problems.
But sometimes when I go to other peoples profiles either to review THEIR books or send them a PQ, or I go to the forums I look up and the 'Log in' Menu is back up.
And I have to log in again.
Somehow I keep getting 'logged out' by the site itself.
I dunno what to tell you. :[ People report this kind of thing now and again, and I don't think we've ever figured out what the problem is. There's a 5 minute period every day (early morning... like 5am central) where the site is doing maintenance and can log people out, but it should only affect you if you're using the site at that time.
It usually happens when any work is done on the website. I know that there has recently been some work on aspects of site programming so perhaps that's it? If so then it shouldn't be a permanent problem.