I used the newest version 7 to clean my pc, moved 2500 files (luckly to the trash) and it trashed several apps, slowed my pc, and many apps are slow to load. I undeleted the files, that helped but problems still exist. I have used CC for 20 years and found it reliable, the newest version needs refinement. I have now uninstalled it and I'm hoping I don't have to do a clean reinstall of windows.