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This article describes the Microsoft System Center Virtual Machine Manager 2008 R2 issues that are fixed in the hotfix rollup package that is dated November 10, 2009.

List of issues that are fixed
Issue 1
If a virtual machine that was created from a template fails during the customization phase, the owner of the virtual machine cannot use the self-service portal to connect to the virtual machine.
Issue 2
The Enable spoofing of MAC addresses option in the virtual machine properties is cleared when you configure the network adapter to connect to a different virtual network.
Issue 3

The "Refresh host cluster" job can take more than 10 minutes to finish.

For all the details see:

KB976244 - Description of the System Center Virtual Machine Manager 2008 R2 hotfix rollup package: November 10, 2009