Comment 218 for bug 355155

@Unhban: That's been my experience. I haven't had a freeze since upgrading to the 2.6.30 kernel several weeks ago.

It's unfortunate I had to find the fix outside of the Ubuntu repositories, but that seems to be consistent with the way Ubuntu has been failing to handle this bug. It took something like 2 months for this thing to even be triaged and given some priority. In the meantime, thousands of Ubuntu users have been dealing with freezes and, if the forums and Twitter are any indication, a lot of people have left Ubuntu for other distros as a direct result of this bug. Once I can clear out a few days, I'll probably jump to Debian after 2.5 years of being a happy Kubuntu user.