I enabled lucid proposed, but I could not find an alsa related package. Maybe the Kernel info below can help you to find out if the module is already installed.
Linux hh-2core 2.6.32-25-generic #43-Ubuntu SMP Wed Sep 1 09:46:39 UTC 2010 i686 GNU/Linux
After removing "options snd-hda-intel position_fix=1" (see mail on 2010-05-30) I had the same problem again. So if the patch is already installed, it did not fix the problem.
If the patch was not installed with kernel 18.104.22.168 then please tell me which package I should install.
Thank you for your help