pe, 2008-08-29 kello 19:51 +0200, Frank Küster kirjoitti: > Any ideas how I can start debugging this? My first suspicion would be about the hardware. You could run memtest86+ for at least 12 hours or until the first error. Another idea: you could test the system with another version of Debian, or with Ubuntu, Knoppix, or another live CD, and see if you can reproduce the problem with that.