I just noticed a quiet noise that comes from the left side of my powerbook when I am charging it. When I unplug it, it goes away. This noise might have been there since I bought the powerbook a couple of weeks ago, but stuff like this drives me crazy, unless confirmed that it is normal. Please... people with powerbooks listen for this noise and see if it goes away when you unplug the charger... It is very quiet and sounds like a static noise.