Just happened to me as well after the latest updates (09/04/10) MSI Wind u100.
http://ubuntuforums.org/showthread.php?p=9098926&posted=1#post9098926
Alt+F2 then pulseaudio -k fixes it for your the current session.
Just happened to me as well after the latest updates (09/04/10) MSI Wind u100.
http:// ubuntuforums. org/showthread. php?p=9098926& posted= 1#post9098926
Alt+F2 then
pulseaudio -k
fixes it for your the current session.