Soundcard configuration lost following a reboot

[Nick Pierpoint]

My soundcard configuration is lost each time I reboot - thankfully a
rare event but annoying nonetheless.

If I reboot and run system-config-soundcard then everything is pretty
much fine. However, following a reboot the system will be silent again.

Does anyone know what system-config-soundcard actually does?

The content of /etc/modprobe.conf is untouched by by
system-config-soundcard when I run it - is this the expected behaviour
or is something awry?

I'm running FC2 - recently upgraded from RH9.

Many thanks for any help.

--
nick