For the first few days, using Bluetooth to connect the 8320
with my Garmin Nuvi 770, I experienced dropped connection problems. I tried changing property values (Echo on, echo off etc) no help. OK, it must be the OS of the BB. Nothing I can do but wait for the next version .(4.3)
I had one last idea. perhaps the location of the BB might make a difference. The BB was in the ash tray between the front two seats. I placed the BB on top of the drivers sun-visor and everything works perfectly! It connects automatically and stays connected.
For those having problems connecting or staying connected you now have hope. Good luck.
CS