Mines hasn't been working since early this morning, it was fine before that and now I have no idea what's going on. I think I'll contact tech support to see if maybe they've got an update on this issue. I need to play black ops...it's my virtual addiction :-/
I think the problem is with AT&T's DNS servers, something must be off on their end. Try manually setting the DNS server to 188.8.131.52 and 184.108.40.206 Those are Google's DNS numbers. Everything started working again after I did a connection test.