Mitch, don't take it personal. He directs that sort of crap at everyone that disagrees with him.
Your credentials are impeccable. You have gone out of your way to be most helpful, on a number of my(and other's) computer related problems, and never steered me(us) wrong. You know your shit.
tw, on the other hand, has ventured to be the last word, in areas not of his expertise... claiming to be the ultimate arbiter while expounding opinion, thus damaging his credibility.