This is hardly scientific, but after the disastrous gaming session I had two nights ago while playing "Modern Warfare 2," it seems like the javelin glitch is mostly gone from Xbox Live games. If you don't know what I'm talking about, count yourself lucky. If you do, it seems that yesterday's warnings from Microsoft, saying that griefers would receive temporary bans from Xbox Live, did the trick. I played for about two hours last night with nary a suicidal rocket attack to be found.
The official title update, which will remove the glitch for good, is still in the approval matrix at Microsoft (and Sony, for that matter), but a semi-empty threat is apparently just as good.
Was I just lucky last night? Has anyone seen much javelin-ing in the last 24 hours? Lemme know in the comments.