Possible passivation problems

There are still actien listeners declared as Stateful seam components that are not serializable, for instance at Nuxeo startup:

02:27:58,850 WARN [Component] Component class should be serializable: conversationIdGenerator
02:27:58,869 WARN [Component] Component class should be serializable: paralleleNavigationHelper
02:27:58,878 WARN [Component] Component class should be serializable: searchDelegate
02:27:58,990 WARN [Component] Component class should be serializable: documentTaskActions
02:27:58,995 WARN [Component] Component class should be serializable: userSession
02:27:58,999 WARN [Component] Component class should be serializable: deleteActions
02:27:59,091 WARN [Component] Component class should be serializable: logoHelper
02:27:59,093 WARN [Component] Component class should be serializable: massEditActions
02:27:59,140 WARN [Component] Component class should be serializable: documentVersioning
02:27:59,484 WARN [Component] Component class should be serializable: localThemeActions
02:27:59,502 WARN [Component] Component class should be serializable: conversationDocumentsListsManager