Johan, did this resolve everything for you? We're using the latest version of Torquebox and seeing a lot of this - seems related: https://gist.github.com/994f8e46e7facc28c3ee
edit: moved to gist because it made the thread render poorly.
This was the answer to the hibernate/infinispan/jgroups error I was stuck on before.
My tests are running smoothly now.
Pl check that you have version 4.1.3 under modules/org/hibernate