Moving to general chat, so more people will see it and respond
Symptoms are:
1. Been away from the forums for > 15 minutes
2. Visit the forums, and in the index page (forum home page), you see new post indicators on some sub-forums
3. Click "new posts", or go into a sub-forum, and no new posts appear.
Let us know if it's happening to you, cause it's affecting mojo and I and we're trying to find a pattern.