Where is the login screen wallpaper located?

I want to know this because I like the picture used and I'd like to use it elsewhere. Where is the LightDM login screen wallpaper located in Ubuntu 11.10?


Solution 1:

It's stored at:

/usr/share/backgrounds/warty-final-ubuntu.png

Solution 2:

In addition to Wojciech Zylinski's answer, if you want to find the location of a custom wallpaper you've set, you can find it between the <filename></filename> tags in ~/.config/gnome-control-center/backgrounds/last-edited.xml of your home folder.