Article ID: 2543531 - View products that this article applies to.
Consider the following scenario:
This issue occurs because the last web ticket is fetched from the director instead of the front-end server.
To resolve this issue, install the following cumulative update:
(http://support.microsoft.com/kb/2540951/ )Description of the cumulative update package for Lync 2010: April 2011
For more information about web ticket, visit the following Microsoft website:
Web Ticket Service Server Details
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.