
As a network professional... 

I can tell you that contacting users before shutting them off is a very bad idea. It's very frequent that a user will 
have wrong contact info on file when you go to contact them...any time you try to wait to contact them you're almost 
always just delaying for the sake of somebody who knows nothing about their computer except that how to use word...for 
the sake of what! Notification == waste of time, 16 years experience agrees with me.
