Recently got my PowerBook and really like it! Another post will be on the way with some other things I'll need to fix. However, as soon as OS X Leopard was done installing, as soon as I got to the desktop the speakers are making this humming sound. Quiet, but loud enough to bug you. Anyone have remedies for this? Really don't want to take it apart again but if I need to I will ---------- Found out it was the fans. Whoops!