There's also a DST update for Windows, and I think it's going to be released as an automatic update before the real date. There are a lot of MS products that worry about date and are in trouble-including stuff that many corporations use to coordinate things, such as Outlook's calendar feature. That stuff takes multiple updates (OS, Outlook, Win Mobile for handhelds, etc.), and it a royal pain. Apple's only issue with the new start and end dates seems to be with the OS itself, and that's been handled as TETENAL says.