I have recently had issues with my handsfree bluetooth devices working with my Desire Z. When I connect with them now, the media streaming works but phone calls do not. The calls are forwarded back to the phones speaker. When I check the settings under bluetooth and those particular devices, the "connected to media audio" is checked but the "use for phone audio" is not. I've tried checking the phone audio but it automatically turns it back off. I've tried with multiple bluetooth speaker phones and headsets and all are doing the same thing. I've even done a factory reset on the phone hoping it was a setting somewhere but still having the same problem.