Comment 2 for bug 563023

This is the output of "gnome-appearance-properties", run from terminal, when switching from None to Extra:

(gnome-appearance-properties:2574): Gdk-CRITICAL **: gdk_display_sync: assertion `GDK_IS_DISPLAY (display)' failed

(gnome-appearance-properties:2574): Gdk-CRITICAL **: gdk_display_sync: assertion `GDK_IS_DISPLAY (display)' failed
There is no available graphics driver for your system which supports the composite extension, or the current one already supports it.

(gnome-appearance-properties:2574): Gdk-CRITICAL **: gdk_display_sync: assertion `GDK_IS_DISPLAY (display)' failed
Couldn't find a perfect decorator match; trying all decorators
Found no decorator to start
compiz (core) - Error: Plugin 'text' not loaded.

compiz (shift) - Warn: No compatible text plugin loaded.