Rubik has moved to Drupal.org. However, there are two places I see where the link should be updated:
1. On drupal.org/projects/admin
The 2.x branch no longer recklessly smuggles a theme into your install through a module. You can use admin with the theme of your choice. The "slate" theme previously included with admin has been discontinued -- instead, our admin theme and icon design work continues in Rubik.
Is this actually an Admin issue? Bugs or requests for Rubik should be filed in its issue queue, not this one.
All links should be updated to the Drupal.org Rubik page: http://drupal.org/project/rubik