I need some advice. There is a small faint noise in my new pb. It almost sounds like a small faint water drop or something. Upon closer inspection, it is a fan of some sort coming on. Remember the noise is faint, but I don't want to bother classmates, should I take it back and get another one. It does bother me a little. Is this a normal noise in these powerbooks. I have never owned an apple. It happens about twice a minute.