I had an intermitent problem where a system based on this board would freeze and I'd have to reboot. It would run fine and then freeze at times of large amount of memory access. I adjusted the memory timing in bios from the default of 2.5 CL (which is what my memory is rated for) and slowed it to 3 and the system has been stable even since that. More interesting is that I can run the same memory at 2 CL and it's also stable for more than a month of usage, just not at 2.5... Suggest adjusting the memory timing to slower and see if this solves the stablity problem.