Ok - Here we go - Let's get you up and going. I need you to fill in the blanks.
Is DNS ok - for the Domain and the NAS Server - ping by name on both?
Was there a change in the Domain Server - add or check to see if there is a reverse address record for the NAS Server
Try changing to PDC then back to ADS or unless this a PDC
Re-set the Domain password on the Windows server - go to the users names and find the admin name right click then change password - then enter the password again into the NAS Server.
We still have the earlier said problem, but the last time it happened was when the NAS box got completely full! now we are monitoring it closely.
Another issue, we are migrating to windows 2003 server and Active Directory in a couple of weeks time, can you please guide us through the process. When the earlier said issue occured we had tried to join the NAS box to another windows 2003 based network, but got a lot of errors, so we would like to have a complete step by step procdure before starting on it.