Windows Small Business Server 2008 Update Rollup 1 addresses the following issues:
Issue 1: The Security tab 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.
Issue 2: 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
More info: Microsoft Update