I always click on the "new' button to see unread posts and use the "new post" button only to enter a topic with no unread posts.
Jr - I've been using St. Louis Sucks to see if I could recreate the problem in a lightly used topic. Sort of a reverse way to prove that very active topics are the culprit. I know the problem exists in On The Farm, Cubs In '13, Around Baseball, and Today's Game.
One of the Createaforum techies should be contacting me today. I've invited him to become a Bleacher Bum so he can see the problem for himself.