The latest set of updates had done something a little odd - there used to be an option on every forum to 'mark this forum as read', which was often useful - but it appears this function is now under the main 'Forums' pull down menu choices, and only offers the optiomn to mark ALL forums read - it really should still be quickly available from the forum itself, it makes more sense to mark a forum as 'read' when you are looking at the forum concerned.