When I click on something and before I hear the usual click I hear a muffled one. If I play a ringtone at volume 0, I hear muffled clicks, is this normal. It seems before a sound is about to come out of the loudspeaker (by clicking or playing any ringtone, etc) its almost as if I can hear the circuit that powers the loudspeaker turn on with little muffled clicks sounds. I have the latest firmware. Any ideas?