Yeah that's what i thought too, but i reseated my Heatsink, (Tuniq Tower), a while back and no change. I would probably have my Q6600 at 3.6ghz if it wasn't for the two hotter cores.
It runs about 60,60,52,52 at about 75% load, from F@H SMP. This is at 3.2ghz x8 multi and 1.30v @ 75% load. 100% load i think it's at about 1.29. And 1.33v Idle. Makes me wonder if half my chip is B0 stepping and the other half G0, lol.
When idle she sits 49,49,42,44 after about 5min.