I am responding to this How To article http://forums.audioreview.com/showthread.php?t=13699

One aspect that is often overlooked is the condition of the ground for the receptacle energizing the surge suppressor. If that outlet is not grounded, it will not work. There are conditions that can trick the surge suppressor into giving you the impression it is working properly, when it is not. This article on Satellite System Grounding explains best.