Error al cerrar la consola gráfica Exchange 2010 "You must close all dialog boxes before you can close Exchange management Console"

Y claro que tenemos todas las consolas cerradas, ¿Por qué pasa?
La consola de Exchange chequea por algun porceso de ventana visible antes de cerrarla, debido a que una ventana oculta de Internet Explorer 9 es considerada como ventana visible, este problema ocurre

¿Cómo se soluciona?
Con un hotfix, lo he probado en el lab y luegoen producción y funciona perfecto, ojo que pide reinicio de server.
 Bajalo de acá ....shhhhhhhhhhhhhhhhh
O lo pueden bajar de acá http://support.microsoft.com/hotfix/KBHotfix.aspx?kbnum=2624899

Mas info:

Prerequisites

The following list contains prerequisites for this hotfix:

• To apply this hotfix, you must have Internet Explorer security update 2586448 installed. For more information about the Internet Explorer security update, click the following article number to view the article in the Microsoft Knowledge Base:
  2586448  (https://premier.microsoft.com/kb/2586448/ ) MS11-081: Cumulative Security Update for Internet Explorer: October 11, 2011
• To apply this hotfix, you must be running Internet Explorer 9 on one of the following operating systems:
  • Windows Vista Service Pack 2 (SP2)
  • Windows Server 2008 Service Pack 2 (SP2)
  • Windows 7
  • Windows 7 Service Pack 1 (SP1)
  • Windows Server 2008 R2
  • Windows Server 2008 R2 Service Pack 1 (SP1)

For more information about how to obtain a Windows Vista service pack, click the following article number to view the article in the Microsoft Knowledge Base:

935791  (https://premier.microsoft.com/kb/935791/ ) How to obtain the latest Windows Vista service pack

For more information about how to obtain a Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

968849  (https://premier.microsoft.com/kb/968849/ ) How to obtain the latest service pack for Windows Server 2008

For more information about how to obtain Service Pack 1 for Windows 7 or for Windows Server 2008 R2, click the following article number to view the article in the Microsoft Knowledge Base:

976932  (https://premier.microsoft.com/kb/976932/ ) Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

 -Dario