I'm assuming that you have access to the ConnectedTV forum section as a developer accepted into the program. What this could be is a quirk of the current forum system that I sometimes notice myself. It appears that when you first view the forum the login credentials are not instantiated in the forum, so it acts as if you're logged out. If you try clicking on "new Topic" then exiting out of there and going back to the forum system you should see the ConnectedTV section again.
I know - it's an annoying bug but it's being worked on.
Jonathan LeBlanc Technology Evangelist Yahoo! Developer Network Twitter: jcleblanc