"Communication with XBOX Live servers has been interrupted"
Everytime I try and play online I get this error, its only with MW3, other games are fine.
Did you Dashboard or disconnect? Because that is what causes it, it happened to me just now.
it was happening to me alot recently i dont dashboard either but sometimes i will just get frustrated up an turn off the 360 middle of a game it is actually really annoying also
Punishment for Dashboarders? Haha.