if the readings are correct, order some Artic silver 5 and reseat the heatsink with that instead. I would say its something to do with your motherboard, so just look through your BIOS and see what options you have that may be relevent.
Opteron 175 + Scythe Infinity
2 gigs corsair XMS DDR 400
XFX geforce 6800 XT
30G Maxtor + 250G Maxtor
"Let's face it, we're not changing the world. We're building a product that helps people buy more crap - and watch porn." -- Seagate CEO Bill Watkins