Yeah, it just stopped. I did troubleshoot a few different things, including repairing the phone, but still didn't work. I rooted my phone and went back to RC33 and it is working again. There are actually a few different threads regarding the problems people have had with A2DP. I was one that was also looking forward to the A2DP update, but I need the bluetooth working on my navigation system. I think the other cupcake updates are awesome!