I use the lastest Axis2 1.5 release with JAXB databinding and wsdl2java for class generation.
The generated classes work, but each operation/class has it's own JAXBContext object.
According to  this isn't nessassary anymore in JAXB2.0.
A single JAXBContext per application is the prefered way.
So I modified the XSLT template in jaxbri-1.5.jar (which als solves
This new template generates just one JAXBContext per MessageReceiverInOut class.