I’ve just finished updating all my Mac’s with either Mac OSX 10.5.3 for the Leopard machines or the security update 2008-003 for the Tiger machines (yes I still have a Tiger machine for support purposes). Both updates went without any problem and my setup was not affected in a negative way. Every item had started after the reboot and worked according to expectations.
In case of doubt, please make a full bootable disk image backup with Cabon Copy Cloner.
Tis was my first major update of the server located in the Macminicolo.net datacenter. It’s a bit scary as I have had the experience of a freeze of the computer after a big update before. But it that time the server was sitting in a cupboard at home within reach. If that happens now I would be at the mercy of Brian. He normally responds very quickly on my emails and iChat request so it might take a bit longer to get the machine back online because he is in a very different time zone. Therefore I schedule these critical activities at a time where I know he is available.
Update: It is always good to wait a few days and monitor the blogosphere and forums to see if there are any major issues with the last update. It’s good to be prepared!