@Phillip, here is something I've noticed that you may want to consider looking into: whenever you're browsing the forum index, and you click on the most recently updated thread to see the new post(s), you are instead redirected to the original post on the first page of that thread, rather than the most recent new reply. This doesn't appear to happen when you click on the thread within that particular board's page, though.
So, in other words, say this very thread, "Your Thoughts: New Muppet Central Forum Features" has new, unread replies: if you click on the thread on the forum index, you're redirected to the first post on the first page of the thread; but, if you click on the thread on the Feedback board page, you're taken to the new, unread replies.
Is there a way this can be corrected so that when you click on the thread to read new, unread replies, that's what you will be directed to when click on the thread from the forum index?