Recommended hotfixes for System Center Virtual Machine Manager 2008

Hi Again;

first of all, i strongly recommended update  KB961983  . This update replaces KB959596 (Description of the System Center Virtual Machine Manager 2008 update to address physical to virtual (P2V) issues) 

Description of the hotfix rollup package for System Center Virtual Machine Manager 2008: April 14th, 2009 
http://support.microsoft.com/kb/961983

Hyper-V Server updates (Required Hotfixes)

956589 Description of the Hyper-V update for issues that may occur when you manage the Hyper-V role on the 64-bit editions of Windows Server 2008 by using SCVMM

956774 A Background Intelligent Transfer Service (BITS) client cannot handle files that have paths that contain the volume GUID in Windows Server 2008 or in Windows Vista

Recommended hotfixes for SCVMM 2008 Server 

958124 A wmiprvse.exe process may leak memory when a WMI notification query is used heavily on a Windows Server 2008-based or Windows Vista-based computer

954563 Memory corruption may occur with the Windows Management Instrumentation (WMI) service on a computer that is running Windows Server 2008 or Windows Vista Service Pack 1 

959596 Description of the System Center Virtual Machine Manager 2008 update to address physical to virtual (P2V) issues

955805 Certain applications become very slow on a Windows Server 2008-based or Windows Vista S955805-based computer when a certificate with SIA extension is installed

Hyper-V servers (Recommended hotfixes)

955805 Certain applications become very slow on a Windows Server 2008-based or Windows Vista S955805-based computer when a certificate with SIA extension is installed

954563 Memory corruption may occur with the Windows Management Instrumentation (WMI) service on a computer that is running Windows Server 2008 or Windows Vista Service Pack 1

958124 A wmiprvse.exe process may leak memory when a WMI notification query is used heavily on a Windows Server 2008-based or Windows Vista-based computer

957967 Stop error message on a Windows Server 2008-based computer that has the Hyper-V role installed: "STOP 0x0000001A"

Hyper-V failover clusters (Recommended hotfixes)

957311 Recommended hotfixes for Windows Server 2008-based server clusters