No shit there's problems with 2.6.9. its crap.. i fell back to 2.6.8.1, and now im waiting for 2.6.10. try and install 2.6.8.1 and see if you got the same problems there (remember to enable support for the pcmia cards you have, and modprobe them if you compile them as modules). i needed some time til' i understood how the 2.6.x kernel tree is built up, but i like it better than 2.4.x now.
My advice is, wait until 2.6.10 comes out, then upgrade

Good luck!
About your sound issue: Either enable ALSA(Advanced Linux Sound Arcitecture) in your kernel(Device drivers->sound then look at alsa and oss), or compile/install the binaries from their
site.
- ^OmeS^