Hi flasbeir,
We're getting exactly the same two error messages 4-5 times in a day. The system was working good in the test environment. Last week we went on production where the quantity of the messages are very big. We opened a case on Microsoft about this issue. We send event logs for the Mqseries side, biztalk server and network trace files to the microsoft. They're currently working on this issue.
You posted this thread on 03-13-2007. It was 7 months ago. What was the situation of your problem ?
Thank you.