I have programmed my CD player to reject shit. Sometimes this happens automatically when there is an upset on the mains supply such as a power surge. It can happen during the night when the house is in darkness with everyone in bed and you think you've turned your deck off but strange things are still happening downstairs. Once you start to think about it it's quite scary especially if you're a female living on your own. I do sympethise with you. Do you keep a baseball bat under your bed?