Suddenly openSSH SFTP has stopped working on our NW 6.5 sp4a server.
Previously an SFTP connection correctly mapped the "home" directory of the
logging-in-user. Now we get an "Error listing directory" message. The
connection opens, but no files are accessible. Interestingly, some users
in our rather large and convoluted tree can access their home directories
regardless of where those directories reside, by attaching to another
host, but others cannot, even though the configuration is set to allow ou
searching all the way from the root.