Mircrosoft has released an update of the Operations Manager 2007 R2 management pack version 6.1.7695.0 Go get it here http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=61365290-3c38-4004-b717-e90bb0f6c148
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Read the complete post at http://scug.be/blogs/scom/archive/2010/11/25/update-operations-manager-2007-r2-management-pack.aspx