Sean's SharePoint Ditty

This article contains information about how to configure a Microsoft Windows SharePoint Services virtual server to use Kerberos authentication. Additionally, this article contains information about how to switch from Kerberos authentication back to NTLM authentication.

Note Version 3 of Microsoft Windows SharePoint Services for Microsoft Office 2007 uses NTLM authentication by default. Kerberos is still supported.

This dude is nuts, but the video is pretty helpful. Look for the one in the list related to workflows.