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
* Runs the default action (open file) by delegating the open group.
	 */
	public void runDefaultAction(IStructuredSelection selection) {
		openGroup.runDefaultAction(selection);
	}
	
	/**
 	 * Handles a key pressed event by invoking the appropriate action,
 	 * delegating to the subgroups as necessary.
 	 */
	public void handleKeyPressed(KeyEvent event) {
		refactorGroup.handleKeyPressed(event);
		workspaceGroup.handleKeyPressed(event);
	}
	
	/**
	 * Extends the superclass implementation to dispose the subgroups.
	 */
	public void dispose() {
		ResourcesPlugin.getWorkspace().removeResourceChangeListener(resourceChangeListener);
		gotoGroup.dispose();
		openGroup.dispose();
		refactorGroup.dispose();
		workingSetGroup.dispose();
		sortAndFilterGroup.dispose();
		workspaceGroup.dispose();
		super.dispose();
	}
}