So far, I have no serious complaints about the OS, and experienced 0 crashes. I tried to install Asus PC Probe II for Vista x64, but received error acpi driver could not be installed. I would like to be able to monitor mb temp. I am still dual booting with xp pro 32 bit and win 7 64. Several months ago I tried installing 4g ram, but xp only recognized 3, and the mb temperature went up (I don't recall exactly how much, but it I remember thinking it was a significant amount). So, I pulled one gig out, and installed a clamp-on fan unit to cool the memory. Now I have reinstalled the 4th stick, and I would like to see what the mb temperature is running under Win 7. Are there any monitors out there that are known to run under Win 7?