The Netlogon share is normally accessible with special security rights. It is possible that when accessing the share outside of the login process, it may be the users do not have rights to read/list files within the share. This can be the case even though the users properly login and execute a login script on the DC.

A simple test, of course, it to see if a regular user can drill into the NETLOGON share and see the files, and read their contents in some fashion.

Bill