Any luck here? Have you tried something?Not sure if this is Lion specific or not, but the desktop background on my primary display has changed to solid gray and I can't change it. I can bring up the preference panel for it, and click on different backgrounds, but nothing changes. I can even change the background on my secondary display... Any thoughts?
If you have the installation DVD you may need to re-install the OS and check if it helped.Any luck here? Have you tried something?