"Registered Users" is the customers that are signed up to view, bid and even post auctions on my site. I have it narrowed down to one IP provider that all their customers can't get on the site. I have sitemeter and it tells me which IP each person is on my site so I can really keep track who is isolated.
The response back from the ones that can't get on to view the sites are: The pages times out or it takes them back to their search page. One of the registered users ran that dos test and it stopped at he.net He found this site and forwared me this link.