I never had this problem until I installed a new Graphics Card (GEforce 2 MX) at first I thought it might be bus noise but no it wasn't and rightfully said creative don't care. It doesn't seem to be with all the sounds just a few... odd. Nice to hear I'm not the only one with this problem. A solution to this problem does seem to be evading everyone I have Wins XP Pro and it is the on board AC97 Avance sound that is causing this. However when I was running my old ATi Rage Graphics Card I didn't have this problem.