I can't help you on your technical difficulties, but c2.com is the site of the first ever wiki, set up by Ward Cunningham in 1995, I believe.
It was, and still is, part of the Portland Repository Project (a software collaboration site, as far as I know) but has grown into a site that is pivotal in the wiki community for discussing practice and new ideas.
When you're on the c2.com page, go to Portland Pattern Repository's Wiki and youll see the wiki.
The only thing I could think is that ewiki is linking to it in an interwiki map way - a lot of wikis link to others for reference.
Sorry I can't help you on the technical front, just a bit of history and speculation.