SQL Server 2008 R2 has got another instalment of Cumulative Update 4 package release, that contains the hotfixes that have been packaged since the release of R2 RTM release. The build number for this release will be 10.50.1746.0, by default these builds are cumulative and release contains all the security fixes that were included in the previous CU release. So it is always better to download and test each of these CU packages seperately if you are facing such issues on SQL Server 2008 R2 instance....(<a href="http://sqlserver-qa.net/blogs/sql2008/archive/2010/10/19/9679.aspx">read more</a>)<img src="http://sqlserver-qa.net/aggbug.aspx?PostID=9679" width="1" height="1">