I have a late 2013 iMac running ML. Please don't get on me about not having the latest OS, I have my reasons, i.e. legacy software that won't run on newer OS. OK, now that we have that out of the way, here's my problem. Yesterday, my iMac spontaneously restarted. I wasn't in the room and by the time I got there I was facing the login screen so don't know if any error messages came up. There was nothing in crash reports in the Library. In Console I saw the reason for the shutdown was a code 5 which is a normal shutdown via the Apple menu. No one was in the room so no one at home could have initiated the shutdown. This code 5 bothers me. Is there any possibility that my iMac was hijacked and the shutdown initiated over the network? Our network is password protected but... Thanks.