With initially installed compiz, cube worked on my laptop with Intel GMA950 graphics, after that I uninstalled that and installed according to leigh instructions as I hoped some plugins which worked under FC6 would start to work under FC10, but it was not the case and I also loose cube efect. As it was not successful I backed to version which is installable through FC10 Add/Remove Software but again no cube.
So now I need help to become cube effect again.