Yeah, the javelin exploit is still on the Xbox 360 version of
Call of Duty: Modern Wafare 2 and I've run into my share of these guys in the past few days. It really sucks having to play on a server with these guys but it is what it is until it is fixed.
Robert Bowling has
tweeted saying the 1.06 patch that's out on the PS3 is currently in the Microsoft certification process so hopefully we'll see it on the 360 side soon. Good because I'm tired of seeing these guys camp out at domination points or being sent in to clear out people who are guarding a point only to have the rest of the team come in after everyone's been wiped out.