I have let it go past even so far as up to 50% and no I haven't let it go all the way b/c first I didn't think there was anypoint b/c nothing was there and second b/c I've heard of viruses and I'm completely an idiot when it comes to computers so I figured why else would there be a downloadable empty file except for it being a virus. I never knew you could scan your files or even how to do it. Thanks for the advice