|What kind of files are contained within the folder(s)?|
How long are the file names of said folders?
How big are the folders?
Just for fun, try copying the smallest folder across a network connection from an XP machine to a Windows 7 machine and then go check on the Windows 7 machine and see if there are still problems with the folder and it's contents.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.