All, I use a custom ConfigurationManager. I notice that the "query(String id)" method of my ConfigurationManager is called 3 times on each request of my client with the same parameter value (the name of the service on wich to provide a DeploymentDescriptor instance). This behavior may cause a loose of process time... After the 3rd call, the ServiceProvider (custom too) is launched correctly. Is it a bug or did I miss something ? Thank's Damien