Wierd thing happened this morning. While on my pc, have wireless Linksys B router, all of a sudden someone's voice came out from the speakers of the pc, and stated something like, "have to call" WOW, I looked at my husband, and he looked at me strange and said, "yes, I heard it too. Sounded like it came from the computer speakers." Anyone every had that before? I shut down the pc. Yes, I do have firewall, and changed the linksys default password, and some other codes. Wierd!
runningbear, several years ago I had an old black and white TV and had it connected to one of those Clappers so I could clap it on or off. No remote for that TV. Anyway one night I was awakened to a bright light and talking. I discovered that the TV was on and voices were coming through it. The voices seemed familiar. Some days later I had my tape recorder plugged into a wall outlet transcribing off of a tape. Pretty soon I started hearing those voices that sounded familiar again. They were talking vulgar to truck drivers.
To try and make a long story short, we were managing my fathers Mobile Home Park and a young couple had moved in and put up a great big antenna. We discovered they had Ham Radio equipment and were cutting into truck drivers CB's and my TV and portable tape recorder also picked it up. I was able to record them as they came through the tape recorder and when they denied what they were doing I had proof. We finally got them evicted.
Maybe something like that happened through your PC. Drive around and see if there are any big antennas around.