I've been having problems with Slackware 11.0 and the version 18.104.22.168 kernel. My Audigy sound card stutters when playing WAV or MP3 files.
What I found is that I had to do either of the following two things to keep the problem from happening.
- Select OSS instead of ALSA in KDE
- Disable Full Duplex operation in KDE
I will post further information if I find a better solution to the problem.