In previous versions of windows, people {bleep}ed about the lack of security while they mindlessly droned on logged in under their administrator account. Microsoft comes up with a new security model in windows and guess what? People {bleep} about it.
Half the time when I have to install an app on my mac I get to type in a password. When i change prefs, password. On the CLI, I often have to run sudo, all the time. Nobody {bleep}es about that. Nobody {bleep}es about having to type in the password on Ubuntu.
Got an app on Vista that pops up the UAC and you are tired of that, just right click and select a checkbox, blam, no more having to put in that password.