Hi i have noticed this before, and tryed some workarunds but nothing works for. I have a Genius NetScroll+ PS/2 and my whell doesn't work. I have Buttosn 5 and ZAxisMapping on xorg.conf my moused have flags high and z 4 5 but nothing this make my mouse whell works. It start to happen since i migrated to 5.1 now i'm using 5.3. What could i do ?