As long as things work it's ok. Could be a sensor fault. My monitor program says my 3.3V is at 3.02V. That's really bad, but there are no ill effects, so I'm guessing it's the sensor. They're not top notch if you know what I mean.
if your 12v is really at 13.4 volts, you have a major issue! anything more than 15% out of spec is a major issue. but zedric has a good point about the sensors, so i would get a voltage tester and hook it up to your 12v line to make sure. to do this, get one of the drive power connectors that has a yellow, red, and two black wires. place the positive (red) probe in the yellow end and the negative (black) probe in the black end next to the yellow.
i went ahead and made a diagram for you...
again, i stress that if any of your voltages are out of spec by 10% or more, then you could seriously damage components on your comp.
this is aprob with your voltage regulators as they r getting hot or of poor quality as it is the 12v line thyre should be no problem as these are power hungry peripherals and most likely these have voltage regulators if it was a prob with you 5 v or 3.3 then id have it checked out micro electronics dont like high voltage
Ep, glad to see you come back and tidy up...did want to ask a one day favor, I want to enhance my resume , was hoping you could make me administrator for a day, if so, take me right off since I won't be here to do anything, and don't know the slightest about the board, but it would be nice putting "served administrator osnn", if can do, THANKS