Comment 122 for bug 119730

> Can we be sure about that? The Ubuntu forums would have me believe that it is a kernel issue..
> http://ubuntuforums.org/showthread.php?t=1150108&page=4

> If it is Ubuntu specific, I'll make the change. In fact, I have already downloaded Fedora.

Well, installing a kernel without the Ubuntu patchset fixed things for me. So I'd hazard a guess that it was an Ubuntu issue.