Wallpaper over 2 monitors in KDE4, SuSE 11.1

Hi guys, I’ve just read this thread. I have just installed openSUSE 11.1 and have a similar problem. Both monitors work fine in all respects but I cannot have a nice continuous wallpaper over both monitors. I have a panoramic skyscape which I wish to use but each monitor just shows a compressed, horizontally, copy of the same image rather than spreading it over the whole two-monitor space. It all worked nicely with openSUSE 10.3 with the same hardware and monitors. Anyone have any suggestions?