Okay, well, i've been uninstalling add-ons that came after I installed M9K, since I didn't see anything strange when I downloaded and first played around with it.
EDIT: Nope, nothing worked. I'd rather not re-install CS;S considering how long it would be to re-install it and barely be able to play any of my favorite servers on Gmod, so i'm just going to wait for a new computer and take it from there. Thanks for the help, guys.