I have a dual core 3.0 with 2 gb of ram, and 3 hard drives, using the Antec Sonata II 450W case. I'm not sure if this is normal, but my processor temp is at 66 c, which is 150F... isn't that kind of high?
If anybody else have this case, does this case have a rear fan? Mine currently say Rear Fan Speed = 0000
That's definately a little warm. I would manually check that all fans are working (espcially the cpu fan) and if they are try redoing the thermal paste on the CPU -- possibly using a high grade paste like arctic silver.
Remember that too much paste can actually have a negative impact...