I just got my new mbp and I'm hearing a noise from it that is annoying me in my quiet apartment. I need to find out if it's completely normal. So the test - while you're in a silent atmosphere put your ear a couple inches away from the delete key. Do you hear a continuous buzzing noise? I can hear it just enough to annoy me while doing regular computing in a quiet space, so you should easily be able to hear it with your ear closer. It's definitely coming from the right side.