FC6 sound gone

[Christian Menzel]

Hi,

The sound in my FC6 installation was workings since I installed it in Oct 2006.
Now it suddenly stopped working and I'm not aware of changing anything.
I get no error messages from the audio applications like xmms or
mplayer when I try to play audio. They show the normal behaviour, I
just don't hear anything.

The soundcard is OK, when I boot Knoppix from DVD, sound is working

The mixer is not muted, system-config-soundcard won't help, the
modules are loaded.

Is there any configuration I can reset?  Or should I just wait for FC7
and reinstall the whole stuff? I'm desperate...

Chris