Apple really is out to get my money out of me this month. A week or so ago my Airport Express died. No warning, it just stopped working one day. So I do the good little fanboy thing and upgrade to an Airport Extreme Base Station. I installed it, updated its firmware to be current, and the next day my 17" Powerbook G4 stops booting. I don't know if they are related and I'm in the process of backing it up through target disk mode. I just wanted to see if anyone had heard of anything similar happening. Slight update as I'm posting this while trying to fix it: Disk Utility returned the error "Invalid extent entry" and then failed to finish verifying. I have repaired the drive now and it has not given me that error again.