hello, Has anyone noticed something odd with the built-in speakers ? -PBG4, 15", 1.33GHz, OS10.3.3. - It seems that my right speaker is 'half working'. I have checked with the balance in the sound control panel and I cannot concretely isolate the right side frome the left. Also I hear all sorts of electric buzzings in this aerea (around the power button). I can 'modulate' the buzzings by traveling through the menu with the mouse. Any similar observations to share ? - - - PascL SaxCartoonCmptR - - -