Article ID: 973408 - View products that this article applies to.
You configure a crawl to use the Crawl only the SharePoint site of each start address option for a content source in Microsoft Office SharePoint Server 2007. After you register a custom security trimmer, the value of the PluggableSecurityTrimmerId registry key is not updated.
To resolve this problem, apply the following two updates:
(http://support.microsoft.com/kb/973409/ )Description of the Office SharePoint Server 2007 Cumulative Update Server Hotfix Package (Coreserver.msp): September 9, 2009
(http://support.microsoft.com/kb/973410/ )Description of the Windows SharePoint Services 3.0 Cumulative Update Server Hotfix Package (Sts.msp): August 25, 2009
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.