I'm on Ubuntu 9.10. If I add a TF display the 3D visualization window freezes, I can no longer move, rotate or zoom the scene. The funny thing is that I can see the frames when I run the turtle_tf example in introduction to tf tutorial (although the frame rate is awful ~1FPS).

You can find the Ogre.log file attached. I don't know if this makes any sense, but I've also attached the Ogre.log file produced when running rviz in the turtle_tf demo. Just in case it can be of help.