I believe that this problem has been resolved in gazebo with controller or Gazebo URDF deprecated

and Hsu has confirmed that with ros fuerte the problem is resolved properly. Here, when I run spawn_box.launch, still the same errors come:

/opt/ros/fuerte/stacks/simulator_gazebo/gazebo_tests$ roslaunch gazebo_tests spawn_box.launch
...
    Warning [parser.cc:348] Gazebo SDF has no gazebo element
    Warning [parser.cc:245] DEPRECATED GAZEBO WORLD FILE
    On July 1st, 2012, this formate will no longer by supported
    Convert your files using the gzsdf command line tool
    You have been warned!

How could I solve this?

Thank you!