I am new. Just thought id introduce myself

I have a 1.5 Pbook running panther 10.3.5, with bluetooth and airport installed. I left my machine on overnight and now The bluetooth icon dispays "bluetooth not avaliable" I dont move my machine around all that much but did have it in target disk mode the other night and I may have just overlooked this for a couple of days.
I dont really use bluetooth all that much, but i was just curious if anyone else has encountered this prob??
Cheers in advance for any advice.