I have tried the first two versions and have always had some sort of issues with my system. Whether it freezes, goes ultra slow or so on. I was skeptical about being a beta tester.  I have to admit that for the most part version 3 seems to be far more stable.  I guess my only concern about it is security. Meaning, if for some reason it caches temp. internet files, and one of those files has your personal info on it that could be a risk. Would be nice if you could let the program know what can be cached or not.