It's nice that you guys (Microsoft) are *finally* giving this some attention, you REALLY have to get your foot out to beat *Nix in this area. At the moment 'Run As' causes applications to crash, which is excellent.. :-/

The problem at the moment is that because Microsoft has left this so late, independent developers right applications assuming they have admin on the box and as soon as you turn that off they die in flames. This should have been addressed in Windows 2000.