One family owns one pair of sandles? How do they know which person gets to wear them?
Jesus is one person, who owns a computer. (A personal computer)
Jesus is a family of more than one person, which owns one computer...
There are probably some freeware applications out there for recovering lost or corrupt data from disks. I would try using your favorite download site (download.com, softpedia.com, majorgeeks.com, etc) to look for recovery software. Perhaps it will be able to repair your folders.
Do you have any programs that aid in the cut and paste feature? I know for example, Microsoft office products will copy up to 24 items or something. Maybe the windows clipboard and an artificial one are getting confused with each other. Just a thought.