I've never had this issue with all my years of using macs. Whenever I type, each key hit makes a brief, soft static-like sound come from my speakers. I tried turning my (external) speakers off and the sound continued to be made with every keystroke, only now it was coming from the iMac's internal speakers. Has anyone else experienced this? I hope there's an easy way to stop it! ---------- I tried re-starting my machine, btw. No difference.