Hello,
To use all my buttons on the Logitech MX518 I added this to my xorg.conf:
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Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Device" "/dev/input/mice"
Option "Buttons" "7"
Option "ZAxisMapping" "4 5"
Option "Emulate3Buttons" "false"
Option "ButtonMapping" "1 2 3 6 7"
EndSection
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I had 2 mice attached, so to be sure I configured the correct one, I only had the the mx518 attached before changing anything in the xorg.conf.
Now all buttons work in FireFox and QuakeWorld, except the wheel-click, but I personally don't use that so I don't care about finding out how to make that work (this took long enough). Forward and Back buttons (thumb) work fine when browsing.
Perhaps this helps out someone
