Recently, I went to use my Powerbook and the battery had completely drained. When I plugged in and restarted, I noticed that the Bluetooth icon on the top of the screen (sorry I don't know the proper name for this) was greyed out and has a squiggly line crossing it out. If I put the mouse over the icon and click, it says "Bluetooth: Not available." I've tried going into Bluetooth setup assistant, etc. and when I do I get this message: "No Bluetooth hardware found. In order to use this application, you must have a Bluetooth module. Please verify that your Bluetooth hardware is properly attached to the computer." Before the battery ran down, Bluetooth was fine. I have only used it once so I'm not all that upset that its not working, but it does bother me on principle - I'd like to be able to sue it if I want to. Any ideas for how to fix this? Thanks.