but I note that Windows 7, (and Vista), use Junction Points. these are like shortcuts to proper folders, eg Music, Photos, Documents, etc, but may be called My Music, My Photos, and so on. They are not really folders themselves but just point to the proper ones in Win 7.
They are there because older software still needs to install in the old fashioned, "My Documents" folders in XP etc. They are legacy components.
Junction points don't hold files themselves.
Perhaps this is what you are seeing?
I recently changed from Windows XP to Windows 7 (64 bit)and am having duplication problems. I moved all of my music from another folder into "My Music". Windows 7 created a second folder(with the same exact name)-- I still can't delete the duplicate because Windows recreates it. Nothing is in the duplicate folder but a "desktop.ini". In the Media Player, I have "playlists" that show up, don't link to anything, and will not delete. Also, all tracks are duplicating. I have combed the folders and I only have one place I am storing the music. I have set up the "library" to look at that one place only. Do you have any clue how I can correct this? One last, in the Media Player, it shows a folder "Music" -- not "My Music" in the watch folders and that will not delete.