1 
3 The microphone doesn't work at all
I have a MacBook Pro and for some odd reason the microphone in the computer only makes noise. I recoded a sample video with Photo Booth and my voce disapeared, only strange noises and when i tap the bottom, on the left of the battery, i hear the taps on the video. Although everything else works fine
(MacBook Pro 15'', 250GB HD, 3GB RAM, 2.33GHz)
