System Restart

Today at work, our group had the system sofware upgraded. With me entering my login it went thru the process as normal till I got a message that it will restart due to new stuff. Again I login. I check the needed programs, I see I am missing a one. I choose it and restart it myself. About 30 to 60 min later, I am off the phones work on a little project when I get the 5 min till shut down message. So I shut it down myself. Thank the computer god that was the only time it happened (to me). I have noticed a few people around me that they got a the 5 min message durring a call and some of them had it happen to them 3 to 5 time durring the day. No more updated, please.