As we talked about in the meeting can you update the tutorial to use the rosinstall generators.

https://code.ros.org/trac/ros/ticket/4075
After following the directions for the gentoo install, this command,

 rosinstall --catkin ~/ros-underlay http://ros.org/rosinstalls/fuerte-ros-full.rosinstall

This breaks the fuerte source install instructions on ubuntu, fedora, arch, macos, etc.