Apple has released Bluetooth Firmware Update for Mac OS X 10.4.3, as noted by The Mac Observer. Apple says this update improves Bluetooth performance and reliability issues. “The Bluetooth Firmware Updater supports D-Link USB Adapters and Apple internal Bluetooth modules on the following CPUs: iMac G4 (Gooseneck); 12″ Titanium PowerBook; 15” Titanium PowerBook; iMac G5; and Mac Mini.