Hi Shadow,
It appears that you have a serious problem if your GUID is banned (see example at bottom of my post).
Can we have some more information and perhaps we can help?
1). Have you played as 'Cookie-Man' ?
2). Have you been a member of any clans ?
3). You're in Ohio ?
One example of what can happen with a player's GUID that shows how serious the problem can be.............
"I went to play on one of my local COD4 servers, because a friend told me it was a good one. It was the first time I had ever been on that server, and I found I had been banned. I went to their site and did the appealing process, only to find that I had been banned on the PBBans master list. I haven't ever done anything wrong, so this came as a surprise, more so than being banned from a server I haven't played on before. I looked at the ban information for my GUID, and found that I was banned in Denmark, which is strange, because I live in Australia. Also, the server that I was supposedly playing on is in the UK. My ping gets pretty high when I connect to a server on the other side of Australia, so how could i have been playing, let alone cheating on a server in the UK?"
and this is the reply he received from a staff member at PBBans............
"Your cd-key has been leaked, which indicates you have installed something or downloaded something onto your computer that allows a trojan to find that sort of information. I would recommend a full re-format, and then buy a new game, and install it, and be more careful next time. Your GUID is currently being used in Denmark, Australia, and Canada.
Nothing we can do about it, the ban will remain as it has been caught using a cheat, regardless of if it was you or not, and I realize it was not likely you. You are, how-ever, responsible for the security of your computer, and your personal information. Hopefully the cd-key is all that was taken, but such trojans also often look for other personal info like credit card numbers, etc. May come with a key-logger, etc. Format, change all passwords you use for forums, chat programs, etc, and yes, buy a new game, and you'll be fine. Make sure you install some decent security software and be careful where you travel on the internet."