MacMini OSX 10.7.1 Lion forgets selected desktop picture following system shutdown. Followed Help...'Change your desktop picture' procedure to select picture. Restart displays default (?) galaxy image.
How to I get system to remember choice? Problem persists before/after reset PRAM. No problem with Snow Leopard on iMac and MacBook Pro.
Admittedly a minor issue, but indicative of deeper issues?