You have a complex policy on a server that is running Microsoft Forefront Threat Management Gateway 2010. When the policy contains many publishing rules, such as hundreds of web publishing rules, the server may take 20 minutes or more to start.
To improve the start time of the server, install the service pack that is described in the following Microsoft Knowledge Base article:
2555840 Microsoft Forefront Threat Management Gateway 2010 Service Pack 2
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates