Just sat here and changed a couple of backgrounds as I like variety and do end up changing my wallpaper about 10 times a day.
Whilst looking at my taskbar I realised that the image on the taskbar itself was not displaying correctly in relation to the wallpaper. For some reason the wallpaper was displaying as if the images (even if they were one image) were on the wrong screens, so the main task bar on the right screen has a transparent image of what is being displayed on the left screen and the left screen taskbar (ultramon) is displaying what is on the right screen. Example. But if I right click on desktop and tell it not to show desktop Icons it fixes the problem, Example 2.
Why should that make any difference? Good thing I don't use any desktop icons!
Discuss.
Whilst looking at my taskbar I realised that the image on the taskbar itself was not displaying correctly in relation to the wallpaper. For some reason the wallpaper was displaying as if the images (even if they were one image) were on the wrong screens, so the main task bar on the right screen has a transparent image of what is being displayed on the left screen and the left screen taskbar (ultramon) is displaying what is on the right screen. Example. But if I right click on desktop and tell it not to show desktop Icons it fixes the problem, Example 2.

Why should that make any difference? Good thing I don't use any desktop icons!
Discuss.