I'm not entirely familiar with OCing of q6600's, but shouldn't the temps be no more than 60C? He has a Zalman for god sakes! He should be hitting 3ghz EASY, and then some.
Edit: I researched around, and I THINK that q6600's top out at 70C. If I were overclocking, I wouldn't go over 65-66 or 67ish. But I dunno. Hopefully someone can clear this up.