Really? Windows 7 still makes users Admins by default, doesn't warn you against it. Single limited users are still restricted to the point of in-usability requiring the the UI and all apps run at administrator level, defeating any security principles.

UAC is defective from the standpoint that every school and corporation I've been at disable it, and those that done click Accept every time without reading or considering what they're clicking on. I understand this is partly a user problem, but damn, I'll do one tiny thing before remembering to disable it and I have to Accept 30 things before I'm done.