Installed this beta selected windows work around. Couple hours later windows said it wasn't activated. Been messing with it hours. Windows tech support took remote access to my computer and still couldn't figure it out. Not saying it's related to this. Don't know for sure. I didn't do nothing else except play mw2 a hour or so. So the timing is suspect. Anyways now it looks like I'm gonna have to format and fresh install to activate windows again. Strange. I wouldn't recommend this beta. Whatever caused it. Gonna cost me days of time. It is a windows workaround. Not sure what they changed exactly.... but here we are. Never had this problem before.