I don’t think so. It was probably the only plugin I was using.
I made a big page with all the shortcodes in it: sam, id, sam-zone, each one with a different number, all that stuff just to see if I could find what the methodology was, and I could not find a pattern. And none of them would show the additional ads within one zone or space, it would only show one. If old deleted ads were still showing up, I would think it’s a cache problem, but I’m more concerned with displaying several ads at a time with one shortcode, so that I don’t need to edit the page when I create another ad in that zone/place/whatever…