I just got one yesterday. I didnt run it at stock at all, im dual priming it right now and my temps got as high as 54C at full load @ 2.17Ghz (370Mhz overclock) with the stock cooler. So i figure max load temps at stock should be under 50C. You should also check what the idle temps are in your bios cause i know mine (ASRock 939Dual) reads 3-4C higher in windows than in the bios, so i just add 3-4C to any temperature reader value in windows. If you start breaking 60-65C at full load i would consider applying some AS5, reseating your HSF, and see what they are after that. If still hitting 60C, i would consider a new HSF.
Well, the temps at idle hover right around 33C and under load, go upwards of 39-41C. Right now, i'm running the stock cooler however, I just took delivery of a zalman 9500 cooler today and will install that tonight.
If you OC at all or use AS5, that pretty much voids your warranty.