Hi, gotta a couple of questions about a macpro, thanks very much in advance!! 1. If I am turning it on and off 3-4 times a day, is it better to shut it down and turn it on each time or sleep it and wake it up? 2. Ive been checking the volts variation on my ups, it has gone from 118v to 106v and up again, is this bad for the computer? whats the minimum and maximum it whould be at?