Our new release of redhat 5.1 contains kernel-2.0.35-1. It seems to be missing the modular sound drivers (sb.o, sb_card.o, etc). Looking back at the previous version on the web site, kernel-2.0.34-6, the sound modules do appear. Is this simply an oversight?
Yup, known bug. Upgrade to 2.0.35-2 in the errata.