At one point when I was a support tech one of our computers would randomly start playing sound, specifically radio stations. This would even happened if the com

At one point when I was a support tech one of our computers would randomly start playing sound, specifically radio stations. This would even happened if the computer was switched off however the external speakers had to be turned on for this to happen. We eventually attributed it to the user's proximity to the national broadcasters main tower (they were within 500m). This only happened occasionally and not always the same radio station. She logged call after call about the problem just for us to travel to her location and tell her we could find nothing wrong while internally thinking that she might be hitting the bottle while at work :)