Possible Duplicate:
How do I add customized wallpapers so they appear in the dynamic unity greeter?
Installed Pangolin 12.04 X64 with 2 users, one user has The default Unity Login Screen with a different user background when logged in. User 2's Unity Login Screen is the same as there background screen when logged in. I want user 2 to have the Unity Login Screen with a different user set background when logged in. This problem happened directly after installation. Have tried Ubuntu-Tweak and Gnome Tweak neither resolve the problem.
Regards Ian Lester