I have an M5A78L-M LX PLUS.
Running an AMD 960T Black Edition unlocked and OCed (6 cores @ 4ghz) and had ZERO problems running Prime95, Battlefield 3 and other stressful things for hours at a time for a couple weeks now.
OC settings: multiplier 20x, cpuv 1.45 and CPUNB to 2600mhz.
But then I touched the mosfets after some reading.
I didn't get burned, but WOW, they were hot.
Did some more reading, turns out that HWMonitor was reporting the CPU at 156 watts, and this is a 3+1 board rated at 125 watts.
I also read that ASUS has Over Current Protection and should protect the VRMs.
Still researching, not sure if this board will safely hold up for me, but I haven't had problems yet...