[web2py] doc not showing properly in firefox

[weheh]

Anybody having trouble with not being able to read doc in Firefox?
Looks OK in Chrome, but Firebug in Firefox throws error:
"NetworkError: 404 Not Found - 
http://web2py.com/book/static/plugin_wiki/ui/redmond/jquery-ui-1.8.1.custom.css";
when trying to access doc index page.