According to Paul Thurrott, who tested a recent build, if you want to delete a shortcut on your desktop, you will have to answer not one but two annoying security dialogs before Vista will agree to carry out your request.
As far as i can tell, all that is achieved by these dialogs is to:
- Terrorize new users.
- Teach users that security is painful.
- Allow blame to fall upon "stupid users" when something goes wrong.
- Reinforce the idea that we just have to accept bad computer security because we can't win.
These dialogs are bad for both usability and security. I wrote a little more about what to do about this problem over at Usable Security.