When viewing a replay everything is ok. However, as soon as I press "U", the camera has a life of its own. I have no chance to control it. Also, when in trackside camera mode, the camera is not focusing on the car perfectly or looses it completely sometime. Any help is appreciated. I searched the forum, but could not find any hint.
Press U again (or twice) to make it solid again. 'end' will force default track camera's. Most of these buttons have multiple functions so press them more then once. checksum this page/camera functions: http://legends-league.com/wiki/rf2Buttons
If activating freelook is making the camera move, chances are you have something assigned to the camera movement controls and it's playing havoc. Or possibly a plugin of some sort of affecting it, so try disabling those and see if that fixes it (if so, re-enable until you work out which one)