Hi. I am using 3.0E Prescott cpu (socket478). The problem is that it gets too hot (?) when being fully loaded. According to gkrellm it is ~42 degrees centigrade when idle and reaches 65 when fully loaded. At this temperature it is autaomatically downclocked. I am using box fan. Is it ok? THe messages from /dev/pts/0 are quite frustrating. Greets.

Jumping from 42 degrees to 65 degress on full load is big jump. The idle temps seem about right for a PIV 3Ghz. You might want to look at your lmsensors configuration (I'm guessing that's where gKrellM pulls it's temps from, at least it does on mine). The initial config had my idle at 56 degrees on a water-cooled 2800+ XP. When it was configured properly, it now shows a more realistic temp - 35 degrees at idle. The box standard CPU fan should be fine, depending on any extra case cooling and the room temperature. I wouldn't want my processor running near 65 degrees though, assuming it's correct. Maybe look at a couple of case fans front + rear to force are through to try cooling things down.

Sounds like your CPU fan is either not installed correctly or is not spinning fast enough. Check that all fans are circulating the air freely and that you've got good airflow through the system

The shown temperature is right - I have confirmed it using another program. I'll check my hardware then.

[edit]
I have cleaned up the fan and repalded the thermoconducting paste with new one, now the temperature reaches 59-60 degrees.