A changing wallpaper for Linux (tested on Ubuntu 10.10 Maverick). Size is 1366x768 (my desktop)
-copy the file to a directory where it won't bother you
-extract the files
-inside a terminal, cd into the folder that was created with the new files
-run "sh ./install" (without the quotes)
...and that should be it. You should now have a wallpaper that changes throughout the day. The images were borrowed from several online sources, and the xml script was borrowed from the All Day Long animated wallpaper found on gnome-look.org, by Edgar Rene Flores Balcazar.
I hope you enjoy it.