Microsoft has released a cumulative update for System Center Service Manager 2010

This update contains a set of bug fixes and updates to the Service Manager 2010 release. This update should be applied to all Service Manager 2010 installations and all systems running components of the product.

Fixes included in this update :
Performance enhancements to the Knowledge article form and Select User dialog
The Computer Name is not set in the Incident form, in all cases, when an incident is generated by the Operations Manager Alert connector
Not all relationship properties are propagated to the Data warehouse server
Form customization fixes for extended properties and workflow fixes on extended properties
Localization fixes to the portal and help files
Duplicate notifications and workflow state transition fixes

  Cumulative Update for System Center Service Manager 2010 (KB 2193861)