Mate, same problem for me, sooo annoying!
Why do you need to inform why you are shuting down or restarting the computer!? Its insane! Its like MS is watching you!
Nope dont know though would like too =P
While that can get annoying for the person running 2003 as a desktop system it is an AWESOME addition for those of us that are admins of systems. It provides for good tracking of WHY a system was shutdown/rebooted when we have to make accountings of why things occur to the systems under our control.