I installed Ubuntu 10.10 Beta (64 bit) and encountered the bug, the sound was muted and when unmuted the sound was set to minimum.
The workaround suggested by Doug McMahon and Jorge Suárez de Lis (https:/ /bugs.launchpad .net/ubuntu/ +source/ pulseaudio/ +bug/592016/ comments/ 1) fixed the problem for me as well.
I installed Ubuntu 10.10 Beta (64 bit) and encountered the bug, the sound was muted and when unmuted the sound was set to minimum.
The workaround suggested by Doug McMahon and Jorge Suárez de Lis (https:/ /bugs.launchpad .net/ubuntu/ +source/ pulseaudio/ +bug/592016/ comments/ 1) fixed the problem for me as well.