We lived in a really old plantation house a few years ago. Very huge open house. It was 9ish and I kept hearing something in the dining room so I went in there to see what it was. I flipped on the light, didnt see anything, then flipped it back off. As soon as the light clicked off i heard a voice beside my ear whisper "hello". I flipped the light back on thinking maybe my sister was f'ing with me, but no one was there. Needless to say after a few freaky instances happening, we moved out.
Never seen a ghost, but it's really hard to come up with an excuse for some of the stuff that happened.