I installed Fedora 9 preview back in April.

This is what greets you when it's finished booting:



I think it's the ugliest login screen wallpaper I've ever seen, and the Fedora team don't give you any way to change it.

I tried deleting the package, but it kept coming back when I applied the latest updates.

Adding exclude=desktop-backgrounds* to /etc/yum.conf and running sudo rpm -e --nodeps desktop-backgrounds-basic seems to have done the trick.