Looks like it took me about an hour to screw up the ubuntu image that came with my QSB. I booted the image and played with the demos for a while then decided to hook up some speakers. No sound. I tried using alsamixer to bump up the volume but that did not work. Now alsamixer will not run anymore. Then I found the volume control on the system menu and tried that. Got a message "waiting fro the sound system to respond". Following some hints found in a google search I installed pulseaudio using apt-get. Now not only do I not have any sound but the video playback is choppy and the timing is off. Does anyone have any ideas?