Every once in a while, without any warning or discernible pattern, my whole Ubuntu machine freezes; the system clock in the upper-right corner stops ticking/moving, all open applications are frozen and cannot be interacted with, the mouse cannot be moved, etc. The only fix thus far has been to restart.
The only common pattern that I think is a solid suspect is the fact that I believe that Mozilla Firefox (v. 20) is open and running almost every time this happens, if not every time. It happens if I leave my machine running over night (and FF is also running), and sometimes it happens while I'm actively using FF (clicking a link, doing some DOM operation, whatever).
I'd like to attack/solve this problem from both the OS- and application-perspective. I'd like to know what logs (for both Ubuntu and FF) I could start looking in for warnings, errors or failures. Also interested in what the community's input/feedback is and if there are any other suggestions for debugging. Thanks in advance!
