able to turn it down, but not off. >> Even with the slider >> in the "off" position, I'm getting a little input. >> I can snap my >> fingers (or type loudly) and still see a reading on >> the input level >> meter. My daughter corrected a similar problem on her iMac DV400 by plugging in an external mic then unplugging it- for some reason her built-in mic was on at full volume and wouldn't respond to any changes to the control panel - now it works fine.