Same problem too. complete freeze, and it's not possible to connect by ssh or ping (the pc uses static ip); no tty on ctrl alt f1 etc.. The freeze always had happened while cpu was not working hard, but some (3-10) minutes after modifyng some images (more than 100) by imagemagick. i was moving the mouse and the complete freeze happened. every time it happened psensor was running on the computer. i had a similar problem with another pc running vista (:D). my kernel is 3.2.0-37. my pc is running a i7 3770, graphics by intel are integrated, and i use a hdmi to dvi cabl. the monitor is LG.
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