Permalinks usually send me to a page with no posts and the only way I found to get to the post is to click older 50 posts, click in the address bar, and click enter or go for the permalink again. Refresh does not work.
Another bug I notice is when I post the discussion is highlighted as new.I still think the forum changes are big improvement.Especially the text is smaller and confined to the box so it doesn't hide under the right column links.