I have followed the advice in various posts to this forum on how to get 12.04 to display my own wallpapers in
/usr/share/backgrounds. None worked I have subsequently established that 12.04 uses file precise-wallpapers.xml to read its' wallpapers.
This file is locacted in
/usr/share/gnome-background-properties. I have added mine to this file. My issue is that when I right click and select 'change background' I now have two thumbnails for my wallpapers. Does anyone know why this is happening and how to fix it?