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The server stops responding after it makes a remote call to a client Marshal-by-reference (MBR) object in Microsoft .NET Framework 1.1 Remoting.
This problem may occur when the server makes a method call to the client MBR object and then the call becomes stuck in a loop. If the method call that is used by the server contains the ThreadPool.QueueUserWorkItem method, the server may become unresponsive after several hundred requests have been sent.
You may also notice that this problem may start when the available thread count on the client-side ThreadPool reaches 0.
To resolve this problem, apply the hotfix that is described in the following previously published Microsoft Knowledge Base article:
824629 FIX: Temporary files are not deleted after you connect to a server that is running Windows SharePoint Services or SharePoint Portal Server 2003
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information, 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