Posted 28 April 2010 - 11:54 AM
My only comment...leave those "duplicate" files alone.
Duplicate files exist for the simple reason that each and every program...attempts to install the key files needed for that program to run effectively. When that program installs a given file in a given location...that's where it expects that file to be. If that file is not in that specific location...well, the user has now created her/his own set of problems by thinking of a computer as something it is not.
If you are talking about data files which have been created/copied multiple times by a user...that's entirely up to the user whether these are deleted or not. There is no impact on the operational capability of the O/S or programs installed.
There are many more important things, IMO, that a user ought to be concerned about...other than how many copies of a given file (which is needed) exists on a system. If you look at the recommended procedures for system maintance...developed by Microsoft and other entities which might be considered reliable experts...you won't find one suggesting a user search for duplicates among system and program files.