You probably were not logged-in. Guests are not allowed access to the CAMPFIRE and HUMOR forums. So, if you ever notice those "missing", look in the upper right and make sure you are still logged on.
This has "caught" quite a few, even LOCUS when he was still an admin and visiting this board. The reason it is catching people is because what a guest can view has changed. When k-bikes was originally setup, guests could only see a few forums w/o registering, so, it WAS obvious when you were not logged-in.
Someone finally understood that this was not the way to run a website (because he read about the benefits of allowing more access on another website) and made the changes.