I have a user with MS Outlook 2011 version 14.3.9 on OS X 10.8.4.  She is connected to an Exchange 2010 SP3 server.  She receives calendar invites from other employees and when she accepts them, they get added to her calendar.  But when she gets calendar item updates (meeting time changes, etc.) she gets the email saying "Your calendar has been updated automatically.  No response is necessary." - and her OWA calendar reflects the updated information, but her Outlook 2011 calendar never updates.  

Outlook 2011 is not showing any sync errors with the server.  Has anyone else encountered this and is there a solution to this issue?

Bob Reed