This is my experience on my Droid X. Whenever I use the voice dialer with my bluetooth (Jawbone) the volume of notifications, ringer, and media drops to nearly inaudible levels. Oddly, these volumes can be restored by plugging-in and then removing a headphone jack, or if I call voice mail with the handset. I can use my bluetooth without the voice dialer and there is no effect on volumes. I can use a wired headset with the voice dialer and no effect. It is only when I use the bluetooth and voice dialer together that I lose volume. It seems that the phone gets confused in managing volumes for different situations. So for me, if I use the voice dialer and bluetooth I restore the other volumes by making a quick connect to voice mail and hang-up, or plug-in and remove a headphone jack. Not a great solution but best I can figure out. Any other ideas?