Originally Posted by oleviarules

i've had similar problems when searching with a party, but what normally happens is some of the part gets in while others are left out, requiring us to leave. check your NAT setting as that may be the culprit. other than that, Infinity Ward said they were looking into it.

Originally Posted by raiderfan

yes, def check your NAT settings.. i was having the same problem not too long ago. my NAT was always set to open and then, out of nowhere, i checked after having this kind of problem, and i saw it was set to moderate. had to reset my router and everything went back to normal -- FOR NOW...