after all the searching, it turns out my USB were correclty working but OSX was defaulting the USB host controller to a secondary one.
i could see the Cambridge S Radio controller in the BT area but my Broadcom one was being ignored.
i tried to switch adapters using Bluetooth Explorer App, but it wouldnt let me switch.
i finally used terminal to force the switch:
sudo nvram bluetoothHostControllerSwitchBehavior=always
rebooted and Voila! all working again.;-)
Why there exists two BT? Do you own a vanilla Mac Pro?