The frontpage of geonode.org contains many 404s, but also the most important action buttons on the User / Admin / Developer sections are 404.
The website should be monitored for such errors. From the repo activity it looks like this project is not dead, but users that visit the website will think exactly that.
http://docs.geonode.org/en/latest/tutorials/install_and_admin/index.html
http://docs.geonode.org/en/latest/tutorials/install_and_admin/quick_install.html
http://docs.geonode.org/en/latest/tutorials/users/
http://docs.geonode.org/en/latest/tutorials/devel/
http://docs.geonode.org/en/latest/tutorials/admin/