Originally Posted by shyamkumar_m 
I too had the same problem with incorrect CPU temperature on Q9400 & ABIT IP35 Pro.
I flashed BIOS with the latest version and it is working fine.
htp://forums.hexus.net/abit-care-hexus/149415-bios-updates-intel-e0-stepping.html
Have you overclocked your system? I am running at 3.4 stable with my memory set to 1:1 so its running @1020.