I have a user who reported this to me.
I just noticed something while performing a search on All Forums. It was an extensive search and the query produced results from forums I frequent and from forums that I have never been to.
Point: When I finished with my search and returned to the Forum Index, I found that the forums I never visit were marked as read. I also noticed that the forums that I always go to were marked as read and that all of the messages in them were yellow, which indicates that I had read every one of them, even though I had not.
I was wonder if anyone else had this problem? Is it a cookie related issue? Any help would be appreciated.