Hey I just noticed, that my MBP (mid 09) is making a very high pitched noise when it is turned off and the MagSafe connector is NOT plugged in. I can only hear the noise when I put the computer close to my ear. The noise definitely comes from the MagSafe area. It goes away when I click the battery indicator button on the side but returns shortly after the batteryindicator lights go out again. Also, there is a ticking/clicking noise that I can hear when my Macbook is fully charged, turned off and the MagSafe is plugged in. The noise is only there when the battery is at 100% (MagSafe light is green) the MagSafe light also seems to flicker very slightly but that's hardly visible (but definitly there) both noises go away when the computer is turned on or in sleep.