What are the criteria for a user background to become login background on user selection?
I'm using 12.04 (beta) having jumped from 10.04, so I don't know whether it's the same with 11.10.
Basically there are 2 users set up on my machine. I've assigned custom background pics for both users. On the login screen when you select one user for login, the whole background changes to the background for that user. However select the other user to log in and the background remains the default Ubuntu splash until you actually log in.
I don't recall setting anything differently when I assigned the backgrounds, so I'm a little confused!
Is there something obvious I've missed? Or more to the point, set by accident then forgotten?!