[Mobhack]

I have noticed that sometimes if I go to a sub-forum and read a thread, then skip back up to the main forums page, the green light stays on despite no unread messages remaining in it. You seem to have to go up one level at a time for the forum software to properly notice the sub-forum message(s) has been read and synch itself.

But if I do it and the green light stays on, if I am sure I have read all, then using the "mark forum read" tool that Don highlighted, is the faster way of getting the forum software to synch properly.