Let me start this by narrating a brief episode that happened to me as I was about 13 or 14 (I can't recall the exact year). I was on the computer, which had those old battery operated white soundspeakers, one at each side of the monitor, and I started to hear a voice through the speaker. It spoke very fast, in some language I did not understand, which was somewhat metalic (reminded me of the pilots voice at the radio on Yavin battle) and it ended with a brief laugh, almost evil or ironic, then coming back to silence. That scared the heck out of me!
I listened to it about four more times, that very same voice, speaking for 3 or 4 seconds, but with no laugh this time, and suddenly silence. I got so scared sometimes I used to take the speakers out of the computer and lock then in the closet, only getting those when I really needed audio. At that time, I considered it was some sort of interference from radio or something of the sort, but it was kinda creepy.
I didn't hear anything anymore, but I've heard some stuff other people has witnessed (which I was asked not to reveal). So, anyone got any thoughts or stories to share?