When I play through my peppermint fuzz and turn my guitar volume to zero, I can hear the radio (or possibly tv) in my amp!!
Thats nothing. When my bruv tuned his hi-fi he managed to pickup a phone call between my mum and her friend.

Anyway I guess it's just interference and i'm guessing it's not a problem if you have to have to vol on zero to hear it.
when i pluged my guitar in to the pc i picked up romanian radio station lol

Jackson dk2m

Marshall jcm2000 dsl

Schecter omen6 diamond series

When I place The jack of a cable into my amp when turned up loud in a particular way to the output of my guitar I pick up the Athiest contemporary Jazz Radio Channel