Comment 3 for bug 778446

I'm having the same problem with Natty, and the issue happens randomly. However, it is possible that while the issue is happening (i.e. playing a video), other applications are able to output sound correctly while the distorted audio is being played back (discovered this today).

I'll update with more information as I find it. Also, feel free to request information of me and I'll try to help provide it as best I can.