I just noticed today that my other desktops (i.e. desktops 2-7) changed the background picture on their own to a picture of an ocean wave (Desktop 1 stayed with the correct image so I don't know how long the others were there as I haven't changed desktops much lately). I'm not sure why this happened. Has anyone else had their wallpaper change on its own (I'm sure the wave is an Apple default for Mavericks somewhere). The weird thing is that when I went to the change desktop background preference panel, my images were still there selected, but not showing on the screen. I clicked to "fit to screen" and then back to "fill screen" and they came up one at a time (had to manually change them back on each desktop, but the correct image was selected in the editor for each one). Is this likely some kind of glitch or bug? I did backup the drives last night with CCC (Carbon Copy Cloner) and it was a new version. I don't know if that could have interfered somehow or what. It never happened before.