I'm not sure if this started after upgrading to 2.1 or not. But when I am listening to music in the car when I get a call the iPhone fades the music down and pauses. I use a bluetooth in the car so I don't even touch the phone. My problem is the iPhone no longer fades the music back up after a call. It just chirps the music for a fraction of a second then pauses again. I remember this workng a few weeks ago. I loved the way it worked but now it does not. Any ideas as to why? I wonder if they did tweeks to bluethooth function in 2.1 and if it sort of "broke" this functionality with my Bluetooth.