fc3: Temperature above threshold

Thu Apr 27 09:10:51 UTC 2006

Hi
I have a problem.
It happens when trying to perform mathematical simulations on my 
FedoraCore3 Pentium4 PC...
I obtain these messages from the kernel:

----
Message from syslogd at localhost at Thu Apr 27 11:06:37 2006 ...
localhost kernel: CPU0: Temperature above threshold

Message from syslogd at localhost at Thu Apr 27 11:06:37 2006 ...
localhost kernel: CPU1: Temperature above threshold
---

Fans are regularly working...
Do you know which can be the problem?

Thanks
Bye
Enrico