Some of you may have noticed that when there are new messages in a forum the graphic to the left of the forum lights up. Once you enter the forum the new thread is in bold. You may have also noticed that it sometimes that light doesn’t turn on and off. This issue is dependent on the way Vbulletin is coded and I can’t do much about it.
While I can’t fix it here’s a tip. If you’re on a page and you know you’ve read something, refresh the page and it should unbold/unyellow the posts and forums that have been read. While I can’t vouch for every OS browser combination out there this has worked for Chrome and Firefox on Windows.
Hopefully this helps