I think the new look has a lot going for it, so well done on putting in the time and effort.
A couple of thing that I'm not so sure about:
1. The poster's info in each post is now presented horizontally, and I think this really adds unecessary bulk to every thread. I preferred the previous layout where the info was vertically presented.
2. At the top of the page it says my inbox is showing 1 unread message. But when I go in there, all my messages are marked as read!