use Vista and the only prompt (warning) I find handy is when something new is trying to run during startup. That is the only time I like to be "annoyed". The bottomline is you are still going to have people clicking on things they shouldn't no matter how many chances you give them. Let's face it, mankind has not changed and children still burn themselves on the stove everyday and always will. You get burned once and most people learn the next time. Computers are no different than anything else in life. :) As an IT manager I find UAC ill-concieved. Typical users should not be running all of the time in an admin account in the first place and MS should be trying much harder to get that message across rather than creating an app that nags you incessently. Users should login in as admin to install an app, then log back into the limited account. If they did that, the deeply annoying UAC prompts wouldnt be needed. On the other side of things, Admins techs should be able to disable the prompts without also having to see the red x in the sys tray that indicates elevated permissions. My hunch is that UAC will be overhauled whenever there is a service pack 1. As it stands now, the UAC doesnt help anyone. I don't want to turn it off, yet there are a couple of programs that I use that every time I try to open it warns