We're finding a problem with long filenames, usually on "My Documents" or on shared drives.
Basically, it seems that a document could be written that has a very long filename, and saved say in "My Documents". Which is fine on that computer, the document is "My Documents\verlylongfilename".
The problem arises when you got to the server the files are stored on, and the path changes to "e:\All Users\Staff Folders\JSmith\verylongfilename", which pushes the character count over what explorer can do anything with.
The only way I've found to "remove" or rename these files is to map through to the folder, but that's completely pointless if you want to move a group of folders.
Is this just a restriction we have to live with and fix as we find, or is there another way to access these files, or even to stop the original users from saving filenames over say 30 characters? A GPO setting maybe?