Well, it appears my Xbox Live account has been hijacked be someone else. FIFA 12 is listed on my achievements... but I've never played it. My Gamertag has also been assigned to a different Windows Live ID and I can't do anything about it.

Just wondering if anyone else on Giant Bomb has been affected by this hack, and whether or not they have gotten there account back yet. In the mean time I'll follow what it says on this link and call Xbox Support.

http://www.xbox.com/en-GB/Live/Account-Security/What-To-Do