I'm not sure how it's happening, but over the past month or so I've found my watch on Mute once or twice a week. The first few times I wrote it off an some accidental touch or something. But now it's happened enough times that I'm beginning to wonder what is going on. It doesn't seem possible that I've done this to myself repeatedly without realizing it. Is there anything else that would mute the watch? Am I doing something that might be switching it off without my knowledge? Or is this just a bug in the OS?