Known bug:
o simdock use gconf to find the background, however when using the new fancy
xml based background, simdock reports:
No handler found for image type.
Error! Could not load Background Image!
However simdock seems to work just fine any way.
To check if you are using a xml based background try the following command:
$ gconftool-2 -g /desktop/gnome/background/picture_filename
Default configuration would give:
$ gconftool-2 -g /desktop/gnome/background/picture_filename
/usr/share/backgrounds/infinity/infinity.xml