2141cb34_NIXBasics__Basic_UNIX_commands__Function
[Directory] lost+found [Function] 
You may have used the Norton Utilities sometime to recover a file lost in some defective cluster. Don't worry anymore, if the hard disk fails the system itself will deal with file recovery, and when the recovering proccess fails to detect where the found block came from it will place it in this directory. This is just another reason why Linux is so much better than any Microsoft OS.
lf68, UNIXBasics: Basic UNIX commands
Function