I'm the admin on a Server 2003 domain. The company is just beginning to purchase desktop and notebook computers with Windows 7 Pro or Ultimate installed. For security the "Last User Logon Name" is not displayed on any of the corporate computer's logon window.
What's happening is even though a computer is the member of the domain, if the user does not prefix his/her logon name with the domain name (i.e. "mydomain\administrator") the logon defaults to the local machine. This has led to access problems for users who think they're connecting to the domain but are in fact only gaining access to their local computer account. Granted, this only occurs if the user name has a profile on the local machine as well as on the domain; but that unfortunately includes all of the notebook computer users as well as a number of other personnel.
I did find an article that modifies the WinLogon/DefaultDomainName registry key but changing the value had no effect on the Windoes 7 Ultimate test notebook PC I'm working on. Ditto attempting to use a GPO to change the default.
Any help is greatly appreciated.