I have been using Panda Free and Malwarebytes Free. However after installing Panda Free my computer has slowed down quite a bit. Games now take a minute to even start loading. And website take about 5 to 10 seconds to load. Didn't have this problem before installing Panda 2016 Free. About ready to uninstall it and go back to just using the MS program with Malwarebytes Free.