A query that contains an Order By clause does not return all results when you issue the query on a managed property in SharePoint Server 2010 or Search Server 2010

Symptoms

Assume that your search service application has multiple query components in Microsoft SharePoint Server 2010 or Search Server 2010. When you issue a query that contains an Order By clause on a managed property, the query does not return all results that should be returned. 

Resolution

To resolve this issue, apply the following hotfix packages:

• 2479788 Description of the SharePoint Foundation 2010 hotfix package (sts-x-none.msp): February 22, 2011
  

• 2479795 Description of the SharePoint Server 2010 hotfix package (osrchwfe-x-none.msp): February 22, 2011