Wendel, that was exactly what I was thinking. We all started having these problems back when everything went energy saving/low mercury. I previously had luck by switching to another lamp manufacturer but this time that didn't work. Since everything is new this has to be a manufacturing problem somehow. Either the lamps or ballast.
And you may be right too about the poltergeists. The owner swears the place is haunted by the old guy who lived in this house that the owner made into a store when the old guy died. I even told him to get a priest or rabbi in to see if he could get the lights to work.