Bug 63351 [Navigator] Import/ExportResourcesAction not removed as listeners of selection service
Open and closing the navigator view, these actions are leaked. It would appear that the dispose for these actions is not getting called?
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/navigator/MainActionGroup.java
menu.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));
		menu.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS + "-end")); 
		menu.add(new Separator());
	
		if (selection.size() == 1) {
			propertyDialogAction.selectionChanged(selection);
			menu.add(propertyDialogAction);
		}
	}
			
	/**
	 * Adds the actions in this group and its subgroups to the action bars.
	 */
	public void fillActionBars(IActionBars actionBars) {
		actionBars.setGlobalActionHandler(
			ActionFactory.PROPERTIES.getId(),
			propertyDialogAction);
		actionBars.setGlobalActionHandler(
			IDEActionFactory.BOOKMARK.getId(),
			addBookmarkAction);
		actionBars.setGlobalActionHandler(
			IDEActionFactory.ADD_TASK.getId(),
			addTaskAction);
			
		gotoGroup.fillActionBars(actionBars);
		openGroup.fillActionBars(actionBars);
		refactorGroup.fillActionBars(actionBars);
		workingSetGroup.fillActionBars(actionBars);
		sortAndFilterGroup.fillActionBars(actionBars);
		workspaceGroup.fillActionBars(actionBars);