I have virtually no problems with my Bluetooth devices. Bluetooth keyboard and mouse for the Mac Mini, a speakerphone for my phone in the car, and various things, including the controllers, for my PS3. The only trouble I ever have is with the speakerphone, and it is clearly a problem with my damned Blackberry, as every time it fails, there's a spinning hourglass on the Blackberry that will basically spin forever and I have to end up pulling the battery.