And so continues the ongoing fight between Leopard and my PowerBook... The sound system seems to be disabled, or otherwise not recognized. The indicator in the menubar shows the volume is turned up all the way, but when i try to adjust it via the keyboard shortcuts, it shows... well look at the attached picture. I will reboot (again), but this time try resetting PRAM. Has anyone else ran into this problem? This was happening before I re-installed Leopard to fix the older problems.