I like it, except for one thing. It's the "mark forums read" button. When I'm looking at the new posts it shows up where the "quick links" button normally resides. I'm always using the quick links so every now and then I'll accidentally mark all forums read. At that point I can't view first unreads. I like everything else.
eta- if it took 2 steps to mark them read it would be good. I'm thinking either a prompt for "are you sure", or a link to another page where you mark them read.