after manually installing the 50 megabytes antimalware definitions by using the downloadable installer from microsoft, next time when i try to update the security essentials through its "update" option ,will and why the program download the previously installed whole 50 megabytes antimalware definitions again as it takes many hours on a slow dialup connection?it should only download the antimalware definition files later to that 50 megabytes antimalware definitions1 person needs an answerI do too