I had experienced the same, and reported it at https://bugs.launchpad.net/ubuntu/+bug/334581. I have had to hard reset my computer four times today.
The circumstances were the same all 4 times: I was copying large directories between different ext4 partitions (using nautilus) when the system locked up. The directories in question have tens of thousands of small sized files. I am going to mark bug 334581 as a duplicate of this one so that we can focus our discussion and testing on one bug report. -- ext4 or 2.6.28 is completely freeze my system https://bugs.launchpad.net/bugs/330824 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
