Hi Braden and all! I can now confirm that indeed a bad mouse setup is causing all that keyboard trouble: After adding a "CorePointer" Option to the Section about the USB-mouse and commenting out the PS2-mouse from the "ServerLayout" Section, the keyboard is working now. If you want the technical details, then please read #169427. Harald -- http://www.unet.univie.ac.at/~a0300802/