Not all of the spaces will show the new desktop picture. So for me to fix this I have to delete and readd the spaces causing me to redo the defults for where apps go on spaces why is this?
As you've found out, Lion can have a different wallpaper for each desktop (space). You can switch to each space and change the wallpaper in System Preferences.
This is a 'feature' not a bug, or as Apple Engineering call it, this is 'expected behaviour'.
Like many other things in Lion, it needs an option in Prefs. They seem to have left so many out....
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