We have 2 xbox in same house, using same router. We both were able to play call of duty mw3 at same time since January whem we purchased second xbox, now since 1 week ago only 1 of the xbox will connect to cod servers, the other gets standard error message "cannot connect to cod server at this time". I have reported to Xbox Live and Activision, neither of them can advise why this happens or how i can fix it. We can connect to other xbox live server at same time, like EA Sports server is ok, so both xbox can be used to play FIFA at same time. Any ideas ???