After having plugged or unplugged a set of powered speakers into my TiBook (550), the audio balance (L/R) often moves by itself. If it moves just a little to the right, the left speaker is barely audible, and the same if it moves to the left. I can easily fix this by moving the slider to the middle. This means I have to open the pref pane (option F3-5 on the TiBook keyboard). In fact, it may not be the insertion or removal of the stereo mini jack. But it does change on it's own, and I would like it to stop. Anyone know why this happens? I can live with it, but it is annoying. After running down to 865mb on a 20 gig HD, I lost all my Network Location preferences (aggg! 10 of them!), and until I repaired permissions (and cleared off some space) I couldn't create a new location. I only say this, because I have recently repaired the permissions. Repairing permissions was the only thing I could think of to try resolving the audio issue. It didn't.