I still use Sandboxie Personal and have lifetime license for it. I was used to using it pretty often a few while ago but now limited only for installing unknown programs. Even this is a considerably rare event. I have set Sandboxie Control to start when running a sandboxed program, not upon Windows startup anymore. The recent build 3.6X seems slower in running initial program than previous build. I prefer DefenseWall for daily use like browsing since DefenseWall has firewall feature and by overall is easier to configure. However, I do set IDM to place the downloaded files into Sandbox for caution.