I have an iMac running 10.3.9 partitioned into 4 partitions. When I am logged on to my partition, the sound does not work in some applications, but does in others. For example, the sound won't work in 'Medal of honor' or any of my arcade games, but it works fine in 'Call of Duty' and iTunes. When I use any other partition, or my external drive, the sound works in all applications. Outside of suggesting and exorcist, can anyone help?