Yep, I think those temps are ok as reported by TAT/Core Temp.
There's something wrong about the temp sensor on these P5Bs definately.
I know it's daft to compare idle temps on two machines which in all likelihood have different cases/fans/ambients etc, but my OC'd E6300 is idling this evening at 34c/42c load.
For reference, with my AC7, the same system/OC would idle at 42c/55c load.