OS X Lion: Cannot log in to Active Directory account after binding in Directory Utility
Symptoms
If you use Directory Utility to bind to an Active Directory domain where the Netbios name differs from the hostname, you may not be able to log in. If you make changes to the Active Directory configuration in Directory Utility you may notice that two Active Directory configuration files are created in /Library/Preferences/OpenDirectory/Configurations/ActiveDirectory.
Resolution
Bind to the Active Directory domain in the Login Options of the Users &