UPDATE ON MY CLAMSHELL IBOOK I installed a OWC 256 Ram and got the machine back up and running after a clean erasing of the 6 gig hard drive. I then formatted it and got it installed with 9.1. It ran fine. I installed Jag fine but upon restart it would start up with the X style screen then go into a circle with the line through it (the "do not" sign) I tried to reset pram, reinstall, everything was for naught. had to start up using norton utilities wipe the drive and put 9.2 on. It appears that my machine does NOT like Jag or visa versa. 300mhz 320 ram 6gig blueberry ibook