I stay up for hours at night because I can hear people talking through my air vents... plotting... I can't understand what they are saying but they are there and I get scared people are breaking in and going to harm me or my girlfriend. Sometimes it sounds like someone is watching tv with old timey voices cracking jokes... it's very unsettling, me nd my girlfriend live alone, she doesnt hear a thing... sometimes I hear a radio playing generic songs coming from the air, I can't pinpoint it...