Weired Error "This is often an indication that other memory is corrupt." executing pipeline component

After migrating our biztalk app to 2009 we received a confusing error message everytime we dropped a file into a file receive location with a pipeline containing a bunch of pipeline components:

"There was a failure executing the receive pipeline:
...
Reason: Attempted to read or write protected memory. This is often an indication that other memory is corrupt"

After along irritating searching we finally debugged the pipeline component and find the root cause:
The call of

message.Context.Read(propertyName, propertyNamespace);

within an pipeline component must not be done with a "Null" value of "propertyNamespace". Obviously there is no internal check for this and the following call within the unsafe code leads into a Null reference call and the error message above.