http://forum.arduino.cc/index.php?action=unread
It only shows seven new posts over five topics. The "Installation & Troubleshooting" topic alone shows 26 new posts.
Before the "upgrade" my habit was to look at Unread Posts sorted by the number of replies so I could look for unanswered questions. I can't do that in individual topics because it brings years-old unanswered posts to the top.
Hope someone can get that bug sorted out.