After investigation,
At the installation of a 'Consumes' configuration, the log of the container says:
[code][Petals.Container.Components.petals-bc-soap]-INFO 2011-04-28 10:23:19,892 The Axis2 service 'authentification' has been registered and is available at 'http://192.168.1.99:8084//petals/services/authentification'[code]
The URL is wrong (double slashes), so if i use this URL appended with '?wsdl', i do not get the WSDL but the default statistic page in response.
This bug is merged on trunk Petals 4