Has anybody else experienced anything like this in their sitch?
Yes, I have. And my guess is, it's not unusual. I've come home several times in the past year to this dilemma. I've been quite vigilant about noticing other things too. Such as, if it's night time - as in dark - and I've been gone all day long, there have been times when the T.V. had a glow to it, as if my spouse had been there, watching T.V.