Hi I installed spysweeper 5.0 today and to start with it didnt go well. I kept 4.5 spysweeper installed and told it to close it and it did and after the reboot it took ages to boot and spysweeper ui.exe was using 75-100 cpu and didnt stop doing this. Then it came up with a a message saying lost contact with engine. I thought good bye spysweeper forever. i tryed to end process but acess denied. i think spysweeper 4.5 was corrout so didnt like it. oddly i had almost the same problem with beta 3 aka lost contact with engine so went back to 4.5. so I uninstalled it then rebooted installed it on its own and now working fine so spysweeper is staying. so i think it didnt like getting rid of spyweeper 4.5 so installing 5.0 on its own without 4.5 there must of fixed it. long day.