Comment 14 for bug 85894

Setting the fan speed manually has helped here as well. I can set it to "auto" or a number in /proc/acpi/ibm/fan - the automatic setting doesn't seem to turn the fan on at all and the processor heats to unstable temperatures. The stability and overheating problems are almost completely gone when I manually set the fan to full speed.

My temporary solution was to put the following code in /etc/rc.local :

#!/bin/sh
echo "level 7" > /proc/acpi/ibm/fan