Got Rollback RX protecting the system and the boot partition, that`s why Sandboxie come in handy .. but not as protection! Because every time the system is wiped clean back to installation state, then program-data in registry and appdata folder etc are wiped too. But when Sandboxie rules over the created Apps folder on another partition with installed user applications then their save data to appdata folder and others are virtualized. And if the registry data are to be virtualized too, then the setup program for the app is pre-copied to the sandboxed Apps folder and run from there. The weird thing though is just registry cleaning, fx. using CCleaner, because it has to be run twice - once outside the sandbox and then also inside the sandbox - to work.