OK, so my GSM phone makes my work speakerphone and car stereo buzz. I know about that the GSM band creates the interference picked up by unshielded speakers.

But now it buzzes my Axioms, EVEN WHEN THE SYSTEM IS OFF?! Short of turning off or moving the phone, has anyone solved this problem? It's really annoying at home. Unfortunately, my job requires my phone to be on 24/7 so it's hard to keep it off.