I don't know which version of the kernel you're using, but an upgrade to the latest stable version possible might help. If not, see this previous post:http://forum.vectorlinux.com/index.php?topic=11950.0
For up-to-date details about this really super alternative, see:https://wiki.archlinux.org/index.php/Open_Sound_System
I've been using OSS, Version 4, for more than 2 years now, and I wouldn't take a chance on going back to ALSA for love or money. It's probably not for everyone, but it sure did (and continues to do) the job for me.