I have a UNIX (Sun) file server cluster which Windows XP clients access via SAMBA. We use group policies for folder redirection of Desktop, My Documents and Application Data to the file server share (but no other group policies at present). However, the system is rather intolerant to breaks in contact between the server and clients, even for a few seconds. This is especially a problem for e-mail programs such as Eudora running on the client. Mailboxes open at the time of break are often completely lost and unable to synchronize when the connection is restored. What can I do to improve tolerance to such connection breaks?