Comment 11 for bug 52288

I tried the change to /etc/X11/xorg.conf described above, but the changes did not work and the buttons remained inactive. However, I continued to research the problem and I was able to find a solution that worked for me. First, thanks to Ubuntu community docs, I reconfigured the Optical Mouse 3000 buttons like described in the Dell 7 button mouse configuration at https://help.ubuntu.com/community/ManyButtonsMouseHowto. I did this by creating the 57xmodmap in /etc/X11/Xsession.d (see attached). Then I changed the relevant section in my /etc/X11/xorg.conf file to the following:

Section "InputDevice"
    Identifier "Configured Mouse"
    Driver "mouse"
    Option "CorePointer"
    Option "Device" "/dev/input/mice"
    Option "Protocol" "auto"
    Option "Buttons" "9"
    Option "ZAxisMapping" "4 5"
    Option "ButtonMapping" "1 2 3 7 6"
EndSection

Now the back function works just fine on my mouse. Took almost 2 hours to solve the problem, but thanks to the Ubuntu Community docs and previous posters on launchpad, I was able to come up with a solution. Hope my config works for you. As alwasys, please make backups of any config files you change, could save you problems later.

Ubuntu Hardy Heron 8.04
Firefox 3.0 RC1