For my XFCE desktop background I use PCLinuxOS Phoenix 2011.png, ie. the blue background with the white phoenix.
Suddenly in the course of today, this png has disappeared and been replaced with a grey background.
Menu - XFCE4 settings manager - Desktop shows that the correct background has been chosen, but it does not display.
Shutdown and reboot makes no difference, the correct picture shows for about a second and then disappears and I am left with a
The desktop icons also seem different.
The only packages I have installed today are
Can anyone help ? Advise me where to start looking ?