Ok, I found this also on older desktops with rotational disks (all the four ones mentioned have SSDs) running Ubuntu 12.04.1.
As Ted points out, it looks like Ubuntu (Upstart?) has issues with shutdown, but could there be a race exposed by the superb speed that Upstart is executing the umount/remount-ro, disk-cache-flush and kernel- reboot vector sequence? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1073433 Title: Ext4 corruption associated with shutdown of Ubuntu 12.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1073433/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs