Sorry to bring this back up but I'm still seeing strange behavior. I have expired the cookies multiple times.

I can read anything within General Discussion such as For Sale, Off Topic, and other subforums will keep their unread marks, as well as posts.

If I read something within empeg-car, such as inside General, it will remove the unread marks from other sub forums inside empeg-car, and sometimes posts in those sub forums.

During this session I read empeg-car/General and after that both Technical/Troubleshooting and Installation Notes had their unread marks removed. Inside Technical/Troubleshooting my unread posts were not marked, but all appeared read. Inside Installation Notes Sein's thread about his awesome Mazda 3 install was still marked as unread, although Installation Notes itself was not marked as unread. It will also remove unread marks from other main forums, such as Rio Hard Drive Portables.

Any ideas? Using Firefox 2.0.0.11.