Looks pretty good otherwise although your 'guest' notifier pop-up wouldn't go away when I tried to dismiss it. Also, why are so many of your threads locked? On a brand new site, I'd want new people to be able to comment everywhere they can rather than trying to force them to comment exactly where you want them to.
Overall looks pretty good style wise - I would advise that you resist the urge to keep adding stuff to it. Let it breathe and be a forum.