Hey, here's a recording of my TiBook and the noise it makes when the PSU side fan comes on. It's a .mov because it shows how far away the recording device is from the source. Anyhoo, does this sound "normal?" I'd hate to have to send in my PB this close to the Fall semester. http://www2.truman.edu/~jps137/web/temp/fan.mov Edit: The sound this fan makes does seem to fade into a much quieter sound, but the fan starting up sounds horrid.