The problem is that it has dissapeared from my account today after I played Modern warfare 2 with my friend on my computer on his account, and when I logged back into my account after he left, the game was gone. when I try to reinstall it, it says the CD key has already been used - ofcourse it has, on the same account that I am trying to reinstall it on.
I have emailed the support team, and I am waiting for a reply.
so my question is: Does Steam have a good support team? Do they understand situations like this? Should I panic?
Thanks in advance!

