Comment 34 for bug 242966

Luke, yes your right and I was mistaken. I muted the pcsp in my existing account which fixed that issue. I then conducted another test as I was concerned it might not default to no pcspeaker sound on a new user. So I created a new test user and no unexpected pc speaker sounds were played. Now on my usual account the mixer is crashing since muting the pcspeaker which Ive reported as a seperate issue. https://bugs.launchpad.net/ubuntu/+source/gnome-applets/+bug/255584