Diningroom light

     Strange activity or something is beginning again. Summer is usually very quiet , but  beginning mid August, events are starting up again. Yesterday I was sitting at the computer in the library, it was midafternoon. My wife was out shopping or whatever, my dog was sprawled in floor taking a nap. The diningroom doorway to the library is less than 3 ft. from the computer console. I noticed the diningroom light had come on, but really didn't think much about it until it went off, maybe a minute later. Thought my wife was home, but the dog hadn't moved and she can rarely get in without his excited welcome. I said something to my wife and got no answer, so I got up from the computer and went to the diningroom. The light switch was definitely off. I switched it back on and off a couple of times to see if there was something wrong with the switch. There didn't appear to be any problem with it. I checked the driveway, my wife's car was not there; she wasn't home yet. I suppose it could have been an electrical abberation. Lights going off and on are not unknown here, but its been years since we had experienced it. Even back when it did happen it was usually in the parlour, not the diningroom. Times coming when I plan to set up a taperecorder and camcorder to see if I can catch, whatever, on video or audio.