Appearances -> Background does not respond to mouse
I've been messing with appearance settings, and decided to switch from Ubuntu to Xubuntu (to see what xfce is all about). Zip, zilch, nada. Empty screen. Branch and hang. I had to do a power down and cold boot.
When I came back to Gnome, my Appearances -> Background dialog no longer responds to the mouse! It will only accept directional input from arrow keys cluster on the keyboard.
In a well-ordered universe, one might suppose this is unacceptable behavior for a "stable" OS. However in this overheated chaotic version, if anyone has any ideas how to reset normal behavior on the background selection window, I'd be grateful.
"Tension, apprehension and dissension have begun!" - Duffy Wyg&, in Alfred Bester's The Demolished Man