As soon as I saw someone mention LXC above, and since I have two machines that I recently upgraded to 14.04 that had LXC and the crashes, I purged LXC, rebooted and re-installed LXC, and voilà: no more crashes!
As soon as I saw someone mention LXC above, and since I have two machines that I recently upgraded to 14.04 that had LXC and the crashes, I purged LXC, rebooted and re-installed LXC, and voilà: no more crashes!