Yeah it was a pain in the ass to talk talk to my friends and finally get a open NAT. Now when I'm in a party it will randomly disconnect us, but leave us in the party. Every so often I check and one of our mic symbols will disappear. To fix it, someone has to start a new party and invite the other person. It went from happening every 3 H5GB games to 2-3 times a game last night. I don'r remember party chat being this broken on the 360.