Setting GDM Login Screen Background

[Sawrub]

Hi All,
Appearance Preferences > Background and selecting 'Make Default' used to 
set the selected desktop background as the background image for the GDM 
login screen and used to work till F11, but is not working as desired 
under F12. Is there any other setting that i'm missing under F12 to do 
the same.

-- 
Saurabh Sharma
Linux user number: 490644
http://sawrub-blog.blogspot.com/
Open your doors.......It's time to look beyond Windows