Just got nailed myself, updated Mama's machine to new 2.6.38.4 bfs kernel, all sound gone, none of the posted solutions on any of the threads work, connection refused yada yada when running alsaconf, alsamixer won't start at all, the symlink to asound.state is there, all volumes are up that I know of, worked fine on previous kernel. going to try another one to see what happens.