I have a Sawtooth with a tooth ache. I had OS X10.2.1 At first my system would slow to a crawl Seemed like it was looking for something on a firewire,usb, or ethernet bus. I say that because I would unplug these and replug them and it would speed up. Then I updated to 10.2.2 and would see my Firewiredrive sporadically And my camera hooked up to firewire could not be recognized. My Machine 450 mhz Sawtooth AGP Graphics Card 20" Apple monitor Keyspan usb to serial adapter 33,000 serial USRobotics modem Internal drives 80 gig maxtor ata 60 gig maxtor ata Super drive A04 The following has been removed and are laying on my desk in front of me. Atto UL2D PCI to SCSI card 18 gig SCSI Drive PCI grahics card, Old ATI Mach 64 17" Apple monitor Kensington Turbo Ring Trackball USB Hub Eternet Hub I reinstalled OS X 10.2 on my 80 gig maxtor drive Installed the driver for the keyspan adapter And here I am! I suspect my ATTO card. Now I will try to add my second monitor. Or maybe I should update to 10.2.1 I would suggest that we all list our setups to see what the common denominator is.