Remember to check for (and install) firmware upgrades on your Mac (specifically iMacs) before you install 10.2! The side effects of not doing this can be rather nasty!! Apple finally put out a kbase article today for service providers about it, but for one poor computer I am working on it is too late. The mildest side effect is a color tint, the worst is no video (that they have acknowledged), but I have one that is worse in the shop.
[Editor's note: Article 86117 in the Apple Knowledge Base contains end-user firmware upgrade information...]

