Comment 7 for bug 1526657

>>So, my conclusion is that the problem happens exactly when the screen saver takes control and the monitor turns off.

For me it was any sporadically associated with any graphics-related operation, eg zooming in google earth, or opening a 3D molecule viewer. I have swapped out the NVS 310 graphics card for an older FX 1800 and had only one crash of this type since then, instead of the many per day that I was getting before.