There is a new Microsoft support article “TCP settings that can impact BizTalk Server” released a couple of days ago that combines previously released information from several sources on what TCP registry settings could impact a BizTalk system:
http://support.microsoft.com/kb/970406/en-us
Three existing support articles have also been reviewed and updated to include BizTalk 2009:
You experience blocking, deadlock conditions, […]
New and Updated BizTalk Support Articles and Hotfix
