The hijack of my screen savers stopped after two days. Not sure why. Dragging the mouse arrow to the deep righthand of my screen may have done it? Apple are generous to give updates. I should show some gratitude. I just wish that there were backdates as well as updates, even if only for a short time. Then if you feel something is not as good when downloaded you can go back to where you were. It can seriously ruin projects if that is not allowed. I reckon a vote would produce a definite "yes" to that from Apple customers. Now for some tea and toast.