This is a blog of
mcr at sandelman.ca
Tue, 08 Feb 2011
If you are like me, and do not use much of gnome, when you start a gnome application, it may start gnome-settings-daemon, which will mess with your background.
gconftool-2 --set /apps/gnome_settings_daemon/plugins/background/active --type bool False
Thank you to: http://ubuntuforums.org/archive/index.php/t-874816.html