Released Oct 18, 2010. Cumulative Update 4 contains hotfixes for the Microsoft SQL Server 2008 R2 issues that have been fixed since the release of SQL Server 2008 R2.
http://support.microsoft.com/kb/2345451/en-us
I’ve gotten reports that this corrects the erroneous SSRS 7403 reporting point error for ConfigMgr 2007.