Having recently upgraded to a Windows Phone 7 HTC HD7, I paired the phone with my laptop via Bluetooth.
Imagine my surprise when a call came in that it was auto answered, and my laptop was acting as a hands-free headset!
To prevent this from happing:
- From within Windows 7 on your Laptop/PC, open up 'Devices and Printers'
- Use the context menu on your phone, and select 'Properties'
- Open the 'Services' tab and un-check A2DP and Headset Audio Gateway.
- Click 'OK'
Hope this avoids some frustration!