Its nothing to do with the vBulletin scripts really, its to do with the MySQL server. See if your host could shed some light on it? (Maybe they can check their logs around the time you get the error?).

Read the link in post #9 too.

Well, they had to change something between 3.5.4 and the 3.7 series as I never got them before. I was just curious as to why it only happens with users that aren't really registered when they try to post, which leaves me to believe it is bots. I'm wondering what they are doing to cause it. I got the gone away errors on my last host like mad. I haven't had any here except for these weird ones. I searched the net and found a lot of links about the error before I posted, but I thought someone here might have run into this with bots. Thanks for the links, though. ;)