I'm with you guys. I can't remember which posts I've opened and which I haven't. The old board not only changed the type face for you, but when you exited the post back to "recent topics" it took you back to the place you left off (ie 30 posts down the list) - the new board takes you back to the top - which makes the visibility of which posts I've already opened all that more important!!!
so far ... not happy. for this and a lot of other reasons.
I have also noticed that the board looks and behaves much differently in different browsers. BAD BAD BAD!!! Design flaw (IMO) ... designers should make sure that their sites look and behave the same way in all the key browsers.