Comment 26 for bug 746028

Yeah, my biggest issue was for Edubuntu where we switch between two completely different wallpapers and will likely have user use the difference of wallpaper to know if a system is Maverick or Natty. The Edubuntu part of this bug has been "fixed" by my upload yesterday.

A similar fix could be applied to ubuntu-wallpaper if we're fine with adding a touch in the .postinst to update the timestamp but I agree it's not critical as both wallpapers are almost identical.