7
We had this problem in xoopsnordic a few years ago. I couldn't keep connected in the site but found if I choose a different theme than the default at the page everything was fine.
I dont know exactely why, but we tryed everything from changing session name (custom sessions) to clearing caches and checking for javascript errors, but solution in the end was that my browser (FF) apparently didnt like the new theme there.
Programming is like sex:
One mistake and you have to support it for the rest of your life.