I'm running Ubuntu 12.04 LTS with Gnome 3.4.2. Changes I make in "gconf-editor" have no effect in Gnome, but they do when I load Gnome classic. For example, changing the order and position of caption buttons had no effect (they remained where they were), but when I logged out and entered Gnome classic, it changed. Also, suddenly, when I try to adjust font hinting (from "slight" to "full") in "advanced settings", nothing happens. I tried making changes both as a normal user and as root, both without luck.