Article ID: 2517722 - View products that this article applies to.
Even 5377 is logged on a Microsoft Lync Server 2010, Group Chat server:
This issue occurs because an INSERT query in a stored procedure is not handled correctly.
To resolve this issue, install the following cumulative update:
(http://support.microsoft.com/kb/2500447/ )Description of the update for Lync Server 2010 Group Chat: April 2011
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.