Safety (what got changed, deleted, lost).Great idea! but this product is realllly not worth it's price for MANY reasons: After that first time I have been unable to finish any scans (and even contacted support) because of some "cute" bugmessage ( which is so dumb that it won't even let you know anything else except that the devs have been informed) after ~2h in to the scan. Only good thing about it was the Adobe-issues it fixed for me.
In fact reboot time tripled and some of my settings (sounds etc.) where lost. That was the one I made, when I bought it and even then, it didn't help my system much or in any noticeable way. So far I've managed to successfully finish oneE scan.
I bought GrimeFighter last year and my licence ends 03/2015. You should take it serious because I bothered to come and QQ about it.