Windows Sharepoint Services SP1
Microsoft Windows SharePoint Services 3.0 Service Pack 1 (SP1) provides the latest updates to Windows SharePoint Services 3.0. Additionally, Windows SharePoint Services 3.0 SP1 contains improvements to security, to stability, and to performance. Some fixes that are included in Windows SharePoint Services 3.0 SP1 were previously released in separate updates. Windows SharePoint Services 3.0 SP1 combines the previously released fixes into one update.
For more information about Windows SharePoint Services 3.0 Service Pack 1, click the following article number to view the article in the Microsoft Knowledge Base:
http://support.microsoft.com/kb/942388/