I have a p4 2.4B with standard retail fan/hs running, not overclocked, and the various MSI utils are telling me that the CPU is running at between 44-46C under normal conditions and around 47-53C after I've been playing games or whatever. Also, it tells me that the system temp is between 25-27C. The inside of the case (Antec 2600amb, with both front and rear fans [in at the front, out at the back])has good airflow and feels perfectly cool, but why should I be getting such high CPU temps? Could the sensor just be messed up? My motherboard is an MSI 645E Max.