Update Rollup 1 addresses the following issues in Windows Small Business Server 2008
The Security tab in the Windows Small Business Server 2008 Console incorrectly reports the spyware and malware status of Windows Vista Service Pack 1-based clients that are joined to a domain. Specifically, some security applications are reported as incompatible in the antivirus and malware status that is reported.
The Internet Address Management Wizard exits unexpectedly when you register a domain name. This issue occurs when you select GoDaddy.com as the provider, and then you click Register Now.
For more Information, Please see: http://support.microsoft.com/KB/958715
How to obtain this update: This update is available from the Microsoft Update Web site: http://update.microsoft.com
Blog Post: http://blogs.technet.com/sbs/archive/2009/01/19/sbs-2008-update-rollup-1-releases-today.aspx