I just built my system and everything seems to be running fine (aside from a problem with the CPU fan header). However, I've been experiencing random freezes...it was even freezing up during the Windows 7 install. There doesn't seem to be any rhyme or reason to it.
Motherboard: Asus P8P67-M PRO
Hard Drive: Seagate Barracuda 7200.12 ST31000528AS 1TB 7200 RPM (NOTE: Although this is a 3gb sata drive, I had to install this on a 6gb sata connection due to space issues)
Graphics Card: EVGA 01G-P3-1561-AR GeForce GTX 560 Ti
Memory: CORSAIR XMS 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMX8GX3M2A1600C9
Power supply: CORSAIR Enthusiast Series CMPSU-650TX 650W ATX12V / EPS12V SLI Ready CrossFire Ready