Hello - I just purchased an IOGear bluetooth dongle and I cannot get the phone to stay connected with my computer. All of the drivers are installed correctly on my laptop running windows vista but when i try to pair the device with my computer, it accepts the passkey but will not remain paired. Any ideas?

Drivers:
Bluetooth: Broadcom 5.1.2535.0
Phone: TMobile 8320 4.2.2.180