It's very difficult to differentiate where one post starts and another ends. The alternative colouring of posts as per the old site would aid in this.

There is no need for the "Replies" heading and I'm not sure there is a need to repeat the Topic/initial post at the top of subsequent pages.

It would be nice to allow for threaded postings.

What's the "Vote" button do?

I'm not sure about the ratings on forum posts but interested to see how it gets used and it it becomes useful.