I started playing COD4 last night and everything was working out well until i loaded into a map all by myself. When i tried to reload the server it said i was banned. Now it's gotten to the point where about half the servers i try to connect to say that "you have been permanently banned from this server" or something about how i've been banned by punkbuster and then it says Global GUID ban c1db039b. I know i haven't been cheating in any way and i didnt do anything to aggravate an admin (aside from being bad at the game) or anything along those lines... I cant figure out what this means or why I've been banned. Can anyone help me out?