Yes, already had the 10.6 june, 18th crossfire app profiles installed.
have you tried waiting it out. I know on my system (and i've read a lot of posts by others) that mw2 tends to freeze at the main menu. Try waiting a couple of minutes and see if it starts to respond.
For me, it usually takes between 30-60 sec
I've waited maybe 30 seconds or longer with no results. I could try giving it a little more time. I'm thinking about going back to 10.5, but others are still running their game on CCC 10.6. My frustration levels are growing and so I'm considering a format. It wouldnt hurt but is time consuming.