I have some major issues with my AdNetwork account. I currently have two running, first account is http://www.agentserver.net/ and second is http://www.ourdir.com/ For a while now everything validates but the weight is set to 0 even thougn there should be some weight. I have no idea how to fix it. I usually join the agentserver account to the ourdir account and consolidate the weight, a while back when i did that everything was fine.
I'd suggest you run through this list and see what's left over. That is likely to answer your weight questions: http://co-op-faq.blogspot.com/2005/03/weight-issues-check-list.html