We finally located the source of our most recent haunting activity. About two years or so ago my husband was doing a renovation at some government offices. They were throwing out some old office chairs, so he brought one home for the computer desk. I guess we are just a little slow to figure out these things. But while I was bedridden with a lung infection, I kept hearing squeeking noises from the chair. It had a a very annoying sound when you sat on it and shifted your weight. I was home alone, and the chair was making noises as if someone were sitting in it. I kept getting up out of bed and tried to sneak up on the chair! After a bit of discussion, my daughter ceremoniously removed the chair from the house. She had on many occassions thought it was me sitting in the chair and come upstairs only to find the lights off and me in bed! Calm has been restored!