Um, yeah. I have only 24 forums/subforums/etc, but the forums I just made has an fid of 28. How do i reset the forum id?
I don't think you can unless you edited mysql which would probably mess up your whole forum. And you must have deleted some?
Is really such a big deal?
You can edit the fid of a particular forum in phpMyAdmin (or whatever you use).
Unless you know what you're doing however, I seriously don't recommend it (threads/posts etc will become unlinked).