Yeah right.

This kup kid runs prime95 for hours with PLL=1.72v / VTT=1.58v / NB=1.75v and now he complains that his system is not stable anymore?
Of course you are going to degrade some component with those volts, and your system will become random.
You just ruined your system, this is not asus fault.

http://img707.imageshack.us/img707/6600/520mhz5hour.jpg