Now that the exploding men and unrelenting rain of crates have been taken care of, it would seem a new issue has arisen in Modern Warfare 2. Specifically, a bug in the Xbox Live matchmaking assignments is reportedly dumping playlist searchers into private matches. (Nothing's worse than being teamed with the lowest ranking players, after all.)
Penny Arcade's Gabe tweeted (warning: foul language through link) that he had encountered the issue several times. Meanwhile, Infinity Ward's man in the trenches, Robert "fourzerotwo" Bowling, confirmed the issue is known and that a fix is currently in the works.
[Via Gaming Union]
Source - cwgabriel [Twitter] (NSFW)
Source - Robert "fourzerotwo" Bowling [Twitter]