Comment 93 for bug 577916

By the way my suspects that Virtual Box had anything to do with this were wrong. I have experienced the issue a few times without ever running virtual box.

Also, I confirm that sometimes also the following happens: that the hibernation process actually _is_ completed (or at least, it does not hang forever and the pc does actually eventually turn itself off even if connected to power) but, when I reboot, it does a fresh boot as if it had been simply shut down.

Note that this and all the other already described buggy behaviours all happen at random times: sometimes one sometimes the other; and sometimes it succsesfully hibernates/suspends and resumes correctly.