Does anyone know what the 'Connect on Power Up' option does under Bluetooth Options???

From the manual:

Turn off automatic reconnection to Bluetooth enabled devices
By default, when you turn on your BlackBerry® device, your device attempts to connect to the last Bluetooth® enabled device you used.
1. In the device options, click Bluetooth.
2. Press the Menu key.
3. Click Options.
4. Change the Connect on Power Up field to No.
5. Press the Menu key.
6. Click Save.


Still a little vague. Typical.