On Saturday, December 21, 2002, at 10:17 AM, Daniel Brieck wrote: > The fan noise is not my problem the system fans are not that loud on > my G4 Sawtooth single processor. The occasional case vibration however > is a disappointment. This machine has been doing this since I have > added a second hard drive. I have six HDs in my 500 Sawtooth, 3 SCSI Cheetahs 10,000 RPS and 3 ATA 7200s. The fan is louder than the drives, except at start up. Must be a loose screw or touching metal somewhere causing the noise. groucho