hey guys, 3rd try on this question, hoping osmeone will have an answer since last two times have not been successfull for a serious answer =\ I have a REV C. 1.33 gighz 12 inch powerbook, and every so often a faint "beep" sound will occur, like in 30 min or 20 min intervals, and I know its not a background program running or anything in the dock. Any ideas? I think it's coming from my speakers, as when I mute them I don't hear it, unless I miss it somehow while doing other things So, anyone else have this happening? I'm just hoping its the speakers and not some sort of whine from the HD or something else goign wrong. Thanks for you'r input!