http://www.microsoft.com/windows ... on/SP1overview.mspx
What's New in WSUS SP1
WSUS SP1 is a service pack release that improves the security, reliability, scalability, compatibility, and performance of WSUS. This service pack includes the following new features and improvements:
• Windows Vista support. WSUS SP1 allows you to update computers running Windows Vista.
• Full client language support. WSUS SP1 supports all Microsoft Office and Windows Vista languages.
• New version of WMSDE. WSUS SP1 upgrades WMSDE from WMSDE SP3 to WMSDE SP4.
• Faster performance. WSUS SP1 improves performance, including accelerated user interface response times.
• All hotfixes. WSUS SP1 includes all changes and hotfixes issued since the release of WSUS.
• Support for SQL Server 2005. WSUS SP1 allows you to use SQL Server 2005.
Windows Vista , sql 2005 大家还是升级吧