Article ID: 976396 - View products that this article applies to.
The Check Names feature in Windows SharePoint Services (WSS) 3.0 resolves names very slowly. This problem occurs when WSS 3.0 resolves names from Windows NT 4.0 domains.
To resolve this problem, apply the following update:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.