How to get special keys to work in ubuntu and Firefox 3.0

Thankfully the people at Mozilla decided to include the expected functionality for the XF86Back and XF86Forward keysyms in the new release so all you need to do is:

# printf 'keycode 234 = XF86Back\nkeycode 233 = XF86Forward' >> /etc/X11/Xmodmap

And to make this take effect immediately (i.e., without having to log out and log in again), as a regular user run:

$ Xmodmap /etc/X11/Xmodmap

For Hardy Heron, the xmodmap command is all lowercase. Also, the /etc/X11/Xmodmap file is not being read on boot. I've added the command to my .bashrc to have it called on startup.

For more information go to the original link.