Running 10 days
without a restart.

Where's the Login Desktop Pictures?

Nathan Aschbacher filed this investigative report from the field:

I just wanted to drop you a note to tell you that I've figured out how to change the image that gets displayed in the background at the MacOS X Login Screen.

The OS just looks for the file called "Aqua Blue.jpg" in /Library/Desktop Pictures/ you can place any image you want in that place and rename it to "Aqua Blue.jpg" and it will get displayed instead of the Apple default background.

If there is no image named "Aqua Blue.jpg" the screen gets filled with the Horizontal white/gray bar scheme that is prevalent in the Aqua interface.