[carcass]

Ya dude, I'm having the same issues. All my friends can connect just fine, but almost every time I either get an "unable to connect" message, or "game match no longer exists". I've played COD4, Gears, and Halo 3 no problem. My NAT is open. I stupidly haven't tried turning off my router and back on again, I'm trying that tonight. It sux cuz I have to hear about how awesome the multiplayer is from my friends all day at work, then I go home to join in and watch connecting screens that end in error messages. Yuk.