AMDs being stable.. Let's see...
I ran a 1600+, on $8 cooling, at 2100Mhz (Stock was 1388Mhz) for two years, running 2.016V into it. It crashed while I was initially overclocking and getting the settings right. After that, the only time it crashed was in the Summer, while Folding. Technically it didn't crash, though. Rather, it hit my mobo shutoff temp of 65C. Yes, it was running stable at 65C.
That processor is now in my backup PC running happily at 1733Mhz.
Now I have a 2400+ running at 2300Mhz, stable as a rock. As a side note, I'm running crappy ram in both machines.
My sisters 2600+ has never crashed.
My parents 2400+ XP-M @ 2100Mhz (for low cooling needs) has never crashed.
Someone built a 2.4Ghz P4 system for my youth group (next to three AMD systems that I built, which have never crashed), and it has overheated more times than I can count, always below 55C. The AMDs are in the same room, with cheaper cooling.
I want everyone to keep in mind that system stability is not nearly soley dependant on the CPU but rather the system chipset, RAM, PSU, amoungst other things.