After 2.5 years of problem free operation (aside from the occasional tracking lag), I am having trouble with my bluetooth connection in my Mac Pro 1,1. This just started happening today when my bluetooth Mighty Mouse randomly stopped working - my first reaction was to change the batteries (which were not old to begin with). Nothing happened. I successfully paired the Mighty Mouse to another mac, ruling out that as the problem. I tried a restart, and that fixed the problem - for about 5 minutes, when I lost the connection again. After searching online, I tried the normal routine fixes - - Verify and repair permissions - Reset SMC - Reset PRAM - Remove Mighty Mouse connection and re-connect Nothing worked. I can restart the mac and regain connectivity sometimes, which goes away after 5 mins or so. Otherwise the, Bluetooth status indicator in the menu bar shows that it is connected, but when i click on it (using my Wacom tablet) it lags before opening. Also, the bluetooth Preference Pane lags. Also, on some of my restart attempts, the bluetooth menu bar icon will show the icon with the squiggly line through it and say "Bluetooth: Not Available". That is about as detailed as I can describe my problem - it is fairly unpredictable. Any help from the community would be greatly appreciated!