Windows SharePoint Services 3.0 Service Pack 1 (SP1) was released by Microsoft.

Overview

This is an excerpt from Microsoft download site.

Windows SharePoint Services 3.0 Service Pack 1 delivers important customer-requested stability and performance improvements, while incorporating further enhancements to user security. This service pack also includes all of the updates released for Windows SharePoint Services 3.0 prior to December of 2007. You can get a more complete description of SP1, including a list of issues that were fixed, in the Microsoft Knowledge Base article 936988: Description of the Microsoft Windows SharePoint Services 3.0 Service Pack 1.

Service Pack 1 will install even if a publicly available update has already been installed on your computer.

SP1 also includes stability improvements developed as a result of user input from the Microsoft Online Crash Analysis and from Microsoft Product Support feedback.

Download the service pack here.