Ramblings from another nerd on the grid
This update fixes critical issues in Communicator 2011, including issues that might cause Communicator to stop responding or quit unexpectedly. For more information about this update, please visit the Microsoft Web site. Applies to: Office 2011, Communicator 2011, Office for Mac Standard 2011 Edition.
Go get it @ http://www.microsoft.com/download/en/details.aspx?id=28784