Not broken, this is appropriate behavior. When you ‘map’ a network drive it uses your default connection information. If you choose “connect using a different user name” you can provide alternate credentials. BUT, the domain MUST have credentials before allowing reconnect or you have no security. If the workstation is not logging into the domain where the drive is located, then use the alternate credential method to attach. Point of clarification – if you are mapping a drive on the xp system and attaching from another computer in the domain, then your user must be in the allowed list for the local machine to reconnect automatically. Network neighborhood negotiates credentials for domain users who are NOT in the local approved list.