I work with Xubuntu 12.04 on a MacBook Air. There are various posts about how to use Emacs' keybindings under gnome (see, for example, Enabling Emacs Keybind on Google Chrome, reverting from emacs keybindings in chrome, or http://www.fettesps.com/ubuntu-emacs-keybindings/).
I installed gconf-editor and replaced "Greybird" by "Emacs" in desktop -> gnome -> interface -> gtk_theme. This change did not seem to have an effect, though.
How can I get Emacs keybindings under Xubuntu? [C-s for "search" and C-y for "paste" in google chrome, for example]