Not to be frivolous but the "international" thing that has annoyed me for years (and it's still there in the Longhorn beta) is that you tell the system what country you're in and what language you use and what keyboard layout and then it STILL sets the system clock to something ludicrous like -8.00 GMT so that you have to go in and manually set it after a Windows installation.

OK so maybe it's not that big a deal for people who only install an operating system once in several years but it irks me all the same.