I have been experiencing problems with Bluetooth on my Mac Pro. I'm able to pair and connect devices, but the connection gets dropped. After resetting PRAM and SMC, deleting all devices from settings and turning Bluetooth off I thought the problem was cured but it manifested again. Someone recommended a reinstall over my existing OS 10.7.5 to overwrite possible corrupt files. I'm wondering how likely this will be to help and what the likely culprit files would be. My gut feel at this point is that it's a hardware problem and replacing a component might be the fix. Is Bluetooth on the 2009 Mac Pro a module which is replaceable, and if so what's the smallest replacement that will fix. Hoping the answer is not the system board.