So I have Lion on my iMac; set Andromeda Galaxy as my wallpaper last week or so, but I think it's time for a change - I set it to the Lion wallpaper (literally, the one with a Lion head), and all was well for the time being. I turned my iMac off for the night last night and this morning, I turned it on - the wallpaper was back to the Andromeda Galaxy. I didn't notice, though, and continued my work as usual. Just now, I tried to change it, but when I created a new desktop space, bam. The new space is the AG wallpaper -___- screensaver is the same. I'm thinking it's something with permissions. Anything I can do in terminal? I'll run a Verify Permissions in Disk Utility just in case and report back...