Prime95 Errors

Just pushed my 6600 to 3294mhz on a Msi p965 platinum.
Ran prime95 for about 2 hours and got an error from core 2.

Restarted the test without rebooting, and has been running fine for about another hour.

Is this fairly common, or should i bump my vcore some more?
Forget what i set it at, but reads at 1.384v in cpu-z.

Could it have anything to do with pushing my ram to far?

I have a set of corsair xms2 6400 4-4-4-12 running at 1100Mhz, 5-5-5-18.
Voltage on the ram is 2.15v.

Also, what should i be expecting my temp to be idle/load and what is the max the c2d should go to?

Thanks-