You may be suffering the same thing as I did - if you've installed the kernel-source RPM, make sure you've configured that to match your kernel RPM ...
Forgot a step - get the alsa-driver SRC RPM and re-build it to get a new, matching kernel module RPM.
-- [neil@xxx ~]# rm -f .signature [neil@xxx ~]# ls -l .signature ls: .signature: No such file or directory [neil@xxx ~]# exit