Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
I don't like the new maps but my biggest gripe is that the playerlist. There are BARELY any people in that list and it's very hard to get into a game now. I want to get into the group that doesn't have the DLC because it's obvious that it is a much larger playerlist and I wont have to sit around waiting to get into a game.
Have you tried going to xbox360's system preferences and searching through the 'memory' tab? Find MW2 and sometimes DLC is a separate entity that you can delete.
edit: my bad, i thought i was in a different forum, obviously.