> It works, seems that everyone is just quiet. We need a decent flame ;) OK then, I installed a Giga 1.3GB upgrade about a fortnight ago and everything has seemed sweet - no sleep problems, perhaps less heat than before! Everything fine. Then last week the (4yr-old) HD plays up. No boot. reinstalled 10.3, no improvement. Booted from 10.3 Install Disk, opened Disk Utility, tried Restore, tried Erase, tried Partition - all gave message "Cannot unmount Disk". Similarly, booting from Norton System Works. In Disk Warrior, I did a hardware check and got message "Disk's SMART software reports no problems" - or words to that effect. Now, running on LaCie D2 back-up disk, awaiting arrival of replacement HD. Coincidence? David.