From what I have seen, it for sure leaves something hidden in the registry after an uninstall; it seems to be hidden and not in any slysoft area of the registry, somewhere I have been unable to find. A clean tool would for sure be a nice benefit, or at least a "true" uninstall that pulls all things from the registry pertaining to AnyDvd. But my guess is this won't ever happen as it would allow for a re-install of the trial at a new 21-days with the system thinking it had never been installed. There are "cleaners" out there if one knows where to look, however, I would never endorse the use of 3rd party stuff. :disagree: