Comment 22 for bug 373450

Since you didn't respond, I tried it myself. Got a few updates, which I luckily managed to revert. It didn't help a thing. Same junk as with the karmic release, my nicely balanced channels are gone the moment you start an app, or change the volume of one in the volume control. And as I said, the overload only happens for a few seconds, after which it then returns to normal level, when it would normally crash due to CPU overload.

You might as well have added the Karmic repo, put some apt-priority in place to make sure you don't upgrade your whole system to Karmic and upgrade from there.