I'm getting crashes every now and then along with an error message that I don't understand.

http://www.n0.se/v/f/0e1c5_crashmessage2.jpg


When this happens the only thing I can do is to press the reset button. The message always looks similar to the the one above, but I don't know what it's trying to tell me. I've noticed that it mentions chromium-browser in the above, but it seems to be randomly picking an application when the crash happens. Sometimes kwin, sometimes konsole, sometimes something else. Below is another example.

http://www.n0.se/v/f/da5b6_crashmessage.jpg

Currently running Kubuntu 12.10, but had the same problem with 12.10.

Have run Memtest86 for a few days without finding any errors.

What is the error message trying to tell me?

CPU: AMD Phenom II X6 1050T
Mobo: Gigabyte GA-890GPA-UD3H
GPU: Nvidia 460 GTX