Bug 220559 Regression in some open editor performance tests
Verifying build I20080226-1155, it looks like some open editors tests are seriously red: - OpenJavaEditorTest#testOpenEditor3(): between -16.1% and -36% - OpenJavaEditorTest#testOpenEditor4(): between -18.1% and -39.2%
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/navigator/CommonNavigator.java
* Used to track changes to the {@link #isLinkingEnabled}&nbsp;property.
	 * </p>
	 */
	public static final int IS_LINKING_ENABLED_PROPERTY = 1;
	private CommonViewer commonViewer;
	private CommonNavigatorManager commonManager;
	private ActionGroup commonActionGroup;
	private IMemento memento;
	private boolean isLinkingEnabled = false;
	private String LINKING_ENABLED = "CommonNavigator.LINKING_ENABLED";  
	private LinkHelperService linkService;
	
	/**
	 * 
	 */
	public CommonNavigator() {
		super();
	}
	/**
	 * <p>
	 * Create the CommonViewer part control and setup the default providers as
	 * necessary.
	 * </p>
	 * 
	 * 
	 * @see org.eclipse.ui.part.WorkbenchPart#createPartControl(org.eclipse.swt.widgets.Composite)
	 */
	public void createPartControl(Composite aParent) {
		commonViewer = createCommonViewer(aParent);	
		try {