davidr,thanks for the comments
i have used Ccleaner for @4 years and have used the issues function and "always" have saved a back-up and have NEVER had a problem at all as i stated in my previous post
Cleans the following
Temporary files, URL history, cookies, Autocomplete form history, index.dat.
Temporary files, URL history, cookies, download history.
Recycle Bin, Recent Documents, Temporary files and Log files.
Advanced features to remove unused and old entries, including File Extensions, ActiveX Controls, ClassIDs, ProgIDs, Uninstallers, Shared DLLs, Fonts, Help Files, Application Paths, Icons, Invalid Shortcuts and more... also comes with a comprehensive backup feature.
Removes temp files and recent file lists (MRUs) from many apps including Opera, Media Player, eMule, Kazaa, Google Toolbar, Netscape, MS Office, Nero, Adobe Acrobat, WinRAR, WinAce, WinZip and many more...
i have never used any other registry cleaner such as tweaknow or easy cleaner
have a good one avast! world