Thanks for your help and suggestions .
I already tried generating a new etkey, but as strange as it sound, it didnt change my xp?!
Do be sure, you are talking about the etkey file in "PATH\Wolfenstein - Enemy Territory\etmain" or do you mean the file in "AppData\Local\PunkBuster\ET\etmain"? I am on windows 8.1 .
Thank you.