This error only occurred once, but it seemed severe enough to report.
I've upgraded to the newest release and made a note of your recommended
things to do and will run those tests if it happens again.
--
BUG: scheduling while atomic: firefox/2231/0x1001
https://bugs.launchpad.net/bugs/472263
** Attachment added: "AlsaDevices.txt"
http://launchpadlibrarian.net/35008366/AlsaDevices.txt
** Attachment added: "BootDmesg.txt"
http://launchpadlibrarian.net/35008367/BootDmesg.txt
** Attachment added: "Card0.Amixer.values.txt"
http://launchpadlibrarian.net/35008368/Card0.Amixer.valu
Public bug reported:
This error just came up. I actually was just looking at a page not doing
anything at all.
ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be
restarted.
AplayDevices:
List of PLAYBACK Hardware Devices
card 0: Intel [HDA