I’m confused. How would this happen if the switches are on a completely different circuit? It would make me think that the problem lies in the panel. Possibly something to do with the neutral. ?????????? I will follow this thread to the end as my curiosity is at a whole new level. All of the facts in here do not compute with me so Scotty; I totally understand your frustration. I hope Ernie or one of the other scientific geniuses pops in here with an answer I can understand. Until then, I share in your frustration.