This is a problem that I have been experiencing for a while now (since 9.10); before that I used a beta driver from Creative (I have a SB X-Fi on my Dell XPS 710), and even though, I have to compile and link it every kernel update, it worked just fine.
Starting with Jaunty, Ubuntu detected my sound card, but the output on the speakers was very poor, it was very noisy with crackling sounds; I ended up switching Pulse Audio with ALSA, and then I got a clean sound output.
Now that I have upgraded to Maverick, the issue persists, and I want to know how to have Pulse Audio disabled, and have ALSA or OSS instead.