You'd wish to have your CPU running at 8?C. All Core 2 Duos/Core 2 Quads on a B3 revision can run up to 65?C, all G0 revisions can run up to 72?C. I believe you have a Q6600. Also, unless you're using liquid cooling/phase change/exotic cooling, you can't get a processor below room ambient temperature because the laws of physics says so

. And you'd be lucky to get 5?C more than ambient on stock cooling at idle.
Which application shows that error? Screenshot?