Then I thought, does she have a noisy ghost? About then I was awake, and she made a comment about a leak in the bathroom. I went to check: bathroom floor dry, no running water, no sign of a leak. She told me there was a big leak over her toilet and water was running down the walls, and I told her it might be one of my pipes under the floor boards, but it could also be from another apartment. We both agreed the plumbers this apartment's management employs are dim bulbs.