The problem still exist.
I ask if you or someone could please file a bug report at JIRA.
If we do not provide a very simple code that causes the problem then we have no chance to get it fixed. I suppose most of the people do not transfer large amount of data by parameter, because nobody cares.
One method call to a stateless bean with one parameter byte [] is enough to replicate the problem.
unfortunatly I am not able to file the bug report at JIRA.