The GadgetDeployer should unregister itself as WebAppListener in the stop method -------------------------------------------------------------------------------- Key: GTNPORTAL-2394 URL: https://issues.jboss.org/browse/GTNPORTAL-2394 Project: GateIn Portal Issue Type: Bug Security Level: Public(Everyone can see) Affects Versions: 3.1.0-GA Reporter: Nicolas Filotto Labels: gadget Fix For: 3.6.4.Final, 3.7.0.Final Attachments: GTNPORTAL-2394.patch Up to now, when the application tries to stop the component instead of unregistering itself it registers itself another time. Indeed the current code is: {code} public void stop() { DefaultServletContainerFactory.getInstance().getServletContainer().addWebAppListener(this); } {code} But should be: {code} public void stop() { DefaultServletContainerFactory.getInstance().getServletContainer().removeWebAppListener(this); } {code}