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
IMenuManager menu = actionBars.getMenuManager();
		menu.add(toggleLinkingAction);
		
		IToolBarManager toolBar = actionBars.getToolBarManager();
		toolBar.add(new Separator());
		toolBar.add(collapseAllAction);		
		toolBar.add(toggleLinkingAction);
	}
	
	/**
	 * Updates the actions which were added to the action bars,
	 * delegating to the subgroups as necessary.
	 */
	public void updateActionBars() {
		IStructuredSelection selection =
			(IStructuredSelection) getContext().getSelection();
		propertyDialogAction.setEnabled(selection.size() == 1);
		addBookmarkAction.selectionChanged(selection);
		addTaskAction.selectionChanged(selection);		
		
		gotoGroup.updateActionBars();
		openGroup.updateActionBars();
		refactorGroup.updateActionBars();
		workingSetGroup.updateActionBars();
		sortAndFilterGroup.updateActionBars();
		workspaceGroup.updateActionBars();
	} 
	
	/**