This is rather confusing...
Basically, I have my forum at
http://forums.mtgdarkness.com, and then I have some subdirectories at places like /chat/ (AJAX Chatbox) /wiki/, etc...
Well, check this out:
http://forums.mtgdarkness.com/chat/
Or this:
http://forums.mtgdarkness.com/s/absolutenonsense
I assure you, there is no directory called "absolute nonsense" on my server... I don't know what's causing it. I disabled all my plugins and products and that didn't change anything...
I also checked my other directories; it isn't happening on my other subdomains... Unless it has vBulletin on it! It's the same thing in my testvb directory... I really don't know what's causing this.