Apparently there is a know issue where zwave devices occasionally just start turning on and off all the lights in the house at random times. This is really really REALLY annoying. Hopefully I was pointed to a fix. It seems that occasionally the 255 broadcast node id gets pushed into the group associations for group1 or lifelink groups. When this happens, any report can cause the lights to come on / off. The solution is to go through the zwave config and remove the broadcast associations one by one. It would be really nice if there were a report under zwave config that could give us that information, or if it at least were part of the zwave node information screen.