Comment 55 for bug 126333

> could you describe easy steps to trigger the issue on a stock ubuntu installation and maybe provide screenshots showing the bug?

I installed Hardy. I have two user accounts that I've had for a while:
 A) My user account does NOT use compiz. It is set to have the volume control control "PCM". It exihibits this bug: Changing the volume "works" but jumps back down to zero randomly.
 B) Another user account, which has probably been logged into twice, apparently uses compiz (or whatever to get the bigger volume control on-screen display). The volume control preference there has *nothing* selected. Thus, the volume control goes up and down fine when you press the keys, but it doesn't actually control anything.

I added a brand new user account and it behaves like B. If I change it (in the Sounds preference panel) to control PCM, I get broken behavior. I didn't see it randomly drop to zero, but it would move in differently sized steps and randomly not move. (In other words, I could hit UP and it wouldn't do anything, but the next UP would make it go up.)