Ubuntu Multimedia :: Heavy Sound Lags After Kernel Update?

After I upgraded from kernel 2.6.32-31 to 2.6.32-32 and then 2.6.32-33, my sound started to lag(the lag occurred on 2.6.32-32 and stayed to 2.6.32-33, but it worked perfectly ever before). Sound does work in itself, but frequently lags and pieces that were already played before will be played again, pretty much like an old vinyl that occasionally jumps or hangs. When I start to replay something, it does not put out anything for a second or two and then starts, when I stop it will keep playing for the exact same amount of time. So, sound is synced to videos(video replay works perfectly well and without the lag). Problem is definitely related to the sound drivers, not to replay software or any buggy file. It occurs with DVDs, Flash Videos in Firefox, music in gmusicbrowser, movie files with VLC, whatever you want. I never experienced such problems with any kernel before. Although I've seen many others posting similar problems, I cannot see any valid solution for myself.

I'm running Ubuntu 10.04 and I sure don't want to go to 10.10 for the second.

I reinstalled Alsa and Pulse, no joy. My sound card is recognized correctly by alsa and can be found in aplay -l. It's a generic onboard surround sound device, although I only use stereo channels.