My first also,and I asked the same question. After being told about the response
you got, I went outside, and before unlocking the door, I looked inside, and sure
enough, the light was off. What was happening was, when you open the door, that
light comes on, and stays the duration, and like he said, it takes about 16 minutes
to go to sleep, so it is hard to ever see it off without knowing the operation!