Comment 4 for bug 466775

To determine you are experiencing this issue open Sound Preferences - you can right click on the Speaker icon on your Pannel, or you can go to "System Preferences". Click on 'Hardware" and the list should be empty.

To determine the Kernel you are running type 'uname -a' and the kernel will be displayed, as shown below:

2.6.28-16-generic #55-Ubuntu SMP Tue Oct 20 19:48:24 UTC 2009 i686 GNU/Linux

To correct: sudo vi /boot/grub/menu.lst

Modifiy or add lines to the2.6.31 is selected. See sample below:

title Ubuntu 9.10, kernel 2.6.31-14-generic
kernel /vmlinuz-2.6.31-14-generic
initrd /initrd.img-2.6.31-14-generic
quiet

title Ubuntu 9.10, kernel 2.6.31-14-generic (recovery mode)
kernel /vmlinuz-2.6.31-14-generic
initrd /initrd.img-2.6.31-14-generic

title Ubuntu 9.10, memtest86+
kernel /memtest86+.bin
quiet