I've done some stupid stuff with computers, but this is the dumbest thing I've ever done. I bought a GIGABYTE GA-M57SLI-S4 to replace my MSI K9 Platinum while it was away getting fixed. Being the kind of tinkerer that I am, I had to update the bios (it was several version behind the current one); problem is I flashed it with the GA-M55SLI-S4 bios. As a tip, never flash the bios on your board before you've had your coffee; trust me, it can wait :) If anyone knows how to unbrick a motherboard (I tried the obvious stuff) let me know.
It's not all bad because while I was kicking myself, I discovered the GA-M59SLI-S5 (I really wish Gigabyte would get a little more creative with their naming), a Nforce 590 based board with two huge advantages over both the GA-M57SLI-S4 and the K9N Platinum. The first, and most important, is that it does Dolby Digital Live encoding; a feature that made me hang onto my Nforce 2 based board far past it's prime. And the second is that it uses a heat pipe to connect to a heat sink right under the exhaust fans in my case, which has made a huge difference in the system temp.