yes i have done that but because i was having difficulty with the cpu usage before i upgraded my pc i switched it off so the aircraft that were (bunny jumping)across the screen are live aircraft from the aerial.it is like the program clogs up and goes slow hence the aircraft jumping possitions then stops ,then i restart the program all goes well for 2 hours then same happens.as you said it may be corrected with v1.4 . if you can imagine the live aircraft doing the same as the network aircraft ,updating every 5 mins but in my case every 5-10 seconds.i am using a duel monitor on my pc and have opened up another radar screen on the other monitor thus i can see local traffic close up and distant trafic on the other,could this have anything to do with it?