All of a sudden when I download programs or program updates, they fail to run and install automatically. Before I would download a program and when it was finished a pop up window would ask me if I wanted to run it. I would click yes and then vista would ask me was I sure, and clicked yes. Then program or updates would install and all was well. Now after I download a program, it just goes to where I designate my downloads to go and I have to go and open the download to run and install it. What happened? Thanks