lol endyen... see that E next to his 3.0 that means its a "Press-hot".
Prescott E -
These are Intel's newest 0.09 micron technology CPUs, they're suppose to scale better than the 0.13 micron Northwoods, but the current C0 revision has a heat issue, therefore it's not a great overclocker compare to NorthwoodC, and these chips at the same frequency, performs worse than Northwood.
They have a tendency to be a toaster.
Personally if i had that cpu i'd upgrade my cooler from stock to something with a lot of copper on it.
has it functioned normal before?
it might just be dust or bad contact with the heatsink.