As a die-hard Emacs users, I can't survive using my browser without Emacs bindings. After I upgraded to Firefox PR1, almost all of those bindings where MIA. The pain! Fortunately, after consulting with the good peeps at irc.mozilla.org, I was told that Firefox now honors the Gnome/GTK settings for key "themes".

Depending on your version of Gnome, you can change the setting by going to the control center and use the Keyboard Shortcuts panel. This does not seem to work in the latest Gnome version, at least my v2.8 installation of Gnome doesn't have the appropriate settings in this configuration panel.

So, in my case, I had to fire up gconf-editor manually, and edit the Key named /desktop/gnome/interface/gtk_key_theme. I changed the value from default to Emacs, and after restarting Firefox, everything was cool again.