Not sure which section to post this but since I am using Lion, I'll put it here. Ok, this has only happened once but it's got me really intrigued and a little concerned. I was surfing the net and suddenly started hearing the sound of someone's laptop. I could hear the whirr of their fans, the sound of them typing and clicking, some shuffling of papers and even their breathing and coughing! Clearly I was somehow picking up someone's built-in mic but how on earth could that be? I closed all browser windows but the sound continued. I was going to look deeper by checking the internet traffic (as far as I understand what I am looking at) but then the sounds stopped just as suddenly as they began. My main concern is that if I can somehow hear someone else, can they hear, see or log what I am doing? Not that I was doing anything I shouldn't but it's the principal, of course. I have seen a few posts in Windows forums about this sometimes occurring but never in the Mac community and the replies given have always been incredulous and dismissive. So any ideas about what just happened?