...first niggles mostly, but never mind.

Keychain

Existing keychain data (ie central password store for pretty much everything from Mail Accounts to Web Sites) appears to have been dumped, so I had to remember the passwords for everything.

Time Machine and Airport

Up until Monday this week, the Time Machine page promised that you could back up to a drive attached to an Airport base station. Well it happens that I have one of those, and I bought it with just this use case in mind.

But on the production release, it doesn't work — the functionality's been removed. You can connect an external drive to the machine you're backing up, or any other Leopard-running machine on the LAN with File Sharing enabled. Maybe it just missed the QA cut and it'll be back for future point releases, but it's not there now.

Iomega UltraMax

This was the drive I bought for Time Machine purposes. Ideally this would be in RAID 1 mode, so you've two mirrored drives automagically backing each other up. If one fails, you can replace it, rebuild the array and no data loss. Some online reviews claim that the drive can't do that under OSX, but that's daft as it's a hardware device. This isn't true, but what is hard is working out how to switch it to RAID 1 — certainly the supplied docs don't tell you. The trick is you need to first press and hold the Rebuild button on the front panel for 10 seconds or so. This will obviously (re)build the array, and it will then pop up in Disk Utility at half the JBOD size. You can then format and you're good to go.