I am trying to write a back-up disc on my dvd drive. It has so far taken 16 minutes (supposidly writing at 20x3000kb) it still hasn't finished! (stopped at 17mins - burned disc OK) It would normally only take 2-3 minutes. At the bottom of my screen there is a square box with a green colour in the middle - it says CPU usage is 100% but then it changes to a black colour which alternates around1%-5%. Is this the reason why? Any suggestions please???