I have seen an issue where the wall will display read topics as unread. Since I generally log iin to check minor boards this has resulted in me having to check each board regardless. I do not believe it is a browser issue for it should not be displaying the red symbol per browser and I mark all posts as read before I leave each time.

Problem is occurring in the Forum indexes not when you open a forum.

My guess is it is a bug in the BB software.