"I have a member over at Renderosity who is still unable to access the site at all, either thru EI or FF...is there anything that can be done?"
2 companies I work with aren't able to access ShareCG, too. The reason: They are using a "Web-Protector". Trubial Fusion Inc. is named in a list of "adservers/spammers" (http://www.bluetack.co.uk). This list is used from various utilities/apps, because the list is delivered in plain ASCII.
If ShareCG is called from a browser, one of the first things the browser does is to load a javascript from Tribal Fusions server. The browser hangs if this fails.