I listen to lots of podcasts. Occasionally, about 3 times a week, the volume stops working. Meaning, I notice it really loud. I go to adjust the volume and nothing. I can see the display and I will set it to 0 for example, but still hear sound full blast. I have to reboot the phone for it to start reacting as expected. Sounds like a Windows Phone 8 bug really. Just checking to see if others have this same issue.