Now I get all sorts of errors from XBox Live with error codes of 80072ee2 or 800705b4. It will tell me I'm not logged in to XBox Live when I am, and am getting game requests from friends. One screen will say I'm not logged in, the next will say I am.
I was able to play COD: Black Ops II multiplayer until a few days ago...now when I try to log on to the COD servers, it will say they are unavailable, but they are all up and my friends are playing.
I have tried all sorts of modem/router resets, setting up static IPs, opening ports, etc. No luck.