Before I installed the hacks for UT,when i pressed F1 i got the scores...and now i can't see them by pressing F1.In User.ini it says that F1=ShowScores.... i chaged the key and the same thing happends..i cannot see the score...When i enter DM the first thing is that a score scrren comes out..and i can't remove it 

Uninstall any hack that provoqued that and install an alternative.

Yeah,i think that's the best way to solve to problem...

Well,i solved the problem by installing the game on a previous copy of UT,without uninstalling.