I have a backup of COD 5 and i was able to play on Wi-Fi for the first day but the next day it didn't want to work, today 11/16/08,. I burned a new copy and still nothing then i tried a backup of GH:WT and was able to go on Wi-Fi proving my router works fine so it must be Gamma or the COD 5 servers. Has anyone had this problem and can anyone help?