This one hits it dead on the head. Even the PC apologists can't deny that Vista has become even MORE annoying than XP ever was. Just yesterday, we had several people all coming together complaining about this EXACT issue. And that was outside of the Mac vs. PC thing altogether.
For those of you who haven't had the pleasure of working with Vista, if you go to certain control panels and attempt to make a change, Vista alertly pops up a message box informing you that a program wishes to make a change to your control panels, and is this OK? Everyone I've seen that hits this sits in stunned silence for a good 3 count, and generally talks back to their computer saying something like: "You mean someone OTHER than me is changing them? No? OMG! You must be kidding!".
Our question was: if double-clicking a program to launch it is not enough information for windows to determine that you actually want to run a program, what is enough information? Is asking only once again really enough? Are you sure, are you really sure? How about now?
All in the name of security.