Comment 66 for bug 615892

This bug is definitely not fixed, you still need to hack around in your xorg config. I use the entry below, you may need to adapt MatchProduct line (copy/paste the string found when running the command 'xinput'). I've no idea what "AutoReleaseButtons" actually should do or if it has ever been commited to xorg. Mapping the buttons to zero is all one should ever need.

$ cat /usr/share/X11/xorg.conf.d/50-madcatz-quirks.conf
Section "InputClass"
        Identifier "Mad Catz Inc. R.A.T. 7"
        MatchProduct "Mad Catz Mad Catz R.A.T.7 Mouse"
        MatchIsPointer "true"
        MatchDevicePath "/dev/input/event*"
        Driver "evdev"
        Option "Buttons" "17"
        Option "ButtonMapping" "1 2 3 4 5 0 0 8 9 7 6 12 0 0 0 16 17"
        Option "ZAxisMapping" "4 5 6 7"
EndSection

Would be nice if a quirks-file could be added to xorg.