Sounds dies in 9.2

I've noticed that my sound dies in 9.2 after I leave it on overnight. I have no idea what causes it or what to look at. When I check it in YaST it tells me that everything is fine. So, I have to reset it in YaST and then reboot to get it going again. Has anyone else run across this? If so, how did you fix it? Thanks in advance Jack