Every once in a while, I will hear my phone make a weird beep and I notice the screen light up. When I look at the screen, I notice the media scanner is running. It is almost as if my phone has rebooted itself. It happens sometimes when the phone is just sitting undisturbed, but it also happens when I carry it with me running. It really causes frustration when I'm running because I use the phone for music and to track my run with runkeeper (runkeeper stops tracking my run). Does anybody know what could cause this? I was thinking the shaking from running might be causing this, but this issue doesn't occur exclusively when I'm running.