I'm hoping someone can help me on this, it's driving me crazy. I have a B&W G3 with a G4 550 upgrade in it running 10.2.6. When I boot the machine, I get the chime, the screens (I have 2) come on and the apple appears. I hear the hard drive initialize with a few clicks and then nothing. I listen carefully and every once in a while I hear the hard drive make a few clicks. Mind you, these are not heavy clunks (big difference between a click and a clunk) like the drive head crashing. These are the usual read clicks. It will sit like this for about 20 minutes clicking now and then and all of a sudden the spinning wheel will appear and it will boot normall from there on. I have tried zapping the PRAM, reselecting my startup volume, booting with my cable modem turned off. I suspected the internal battery, but I unplugged the machine for a few minutes and booted without my modem plugged in to avoid network time sync and the time stayed correct. As a last resort, I will try replacing it anyway. I have heard that can cause problems. I have run disk first aid. Did it manually through single user mode using FSCK. I am stumped. The odd thing about his is that it happened a few months back for a few days and then went away. Now it's back to stay. I'm afraid the drive may be failing, but once it boots, it runs flawlessly. Oh yea, and the machine boots normally from the Jaguar CD. Any help would be greatly appreciated. Thanks.