Comment 11 for bug 67998

For those of you still struggling with this issue I just ran into it when updating from Ubuntu 7.04 to 7.10
I had to search for what seemed to be a lifetime to fix this bug.

~$ asoundconf list
CA0106
~$ asoundconf set-default-card CA0106
This would get me audo but only in one program.
~$ esd &
Wouldn't start stating that it was missing variables.
What I ending up doing was
~$ sudo mv ~/.asoundrc* ~/Desktop/
~$ asoundconf set-default-card CA0106
~$ esd &
And by creating new .asoundrc files my sound starting working again no reboot required.