E7400 OC (easy, but hmmmmm)

So, built my system
Asus p5q-e
E7400 (2.8)
4GB 800 ram
WD 640 HD
Vista 64

So, my first OC test was going up 7% to 3Ghz and that was all fine.
Next, went to 3.213 (306FSB), ran P95 for a while and my vc was up around 1.27 (auto) cpu ran about 66c (cores and cpu) changed vc to 1.25 (just for a number) and the cpu went to 60c and the cores to 63c
This is with the stock cooler - haven't put in my aftermarket yet. Anyways, p95 gave me nothing (only ran it for half hour or so, but just wanted to see temps when maxed). WEIRD thing is, 10minutes later, Speedfan was showing Core 0/1 @ 38c, cpu was at 131c - dropped to 1c then back to 131c
Waited. Waited... panicked and opened case. Everything is cool. System is 30c, everything else normal except that one reading...
WTF? I can't figure it out... bad sensor? Donno... it's reading 24c or so right now (virus scan in background and me on the web)... Argh.

real temp, core temp, speedfan, intel thermal analysis tool, etc

well, then don't go off of cpu temp, go off of core, its the one you want to pay the most attention to anyway. besides, cpu is always within a few degrees of the core.