You use the MQSeries adapter in Microsoft BizTalk Server to process messages to an IBM WebSphere MQ server. In this case, the server that is running BizTalk Server may respond slowly.
This issue occurs because of a memory leak that may occur in a Dllhost.exe process that hosts the MQSAgent2 COM+ application.
Cumulative update informationThe fix that resolves this issue is included in the following cumulative updates for BizTalk Server:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.