Bug 76969 Preference change not propegated.
build N20041024 - open the workbench - popup a menu over the perspective switcher and choose Dock On > Left NOTE that the UI does not respond right away (and it should). Seems that the listener is not being notified of the change.
bundles/org.eclipse.ui/src/org/eclipse/ui/internal/UIPreferenceInitializer.java
false);
		
		node.put(IWorkbenchPreferenceConstants.PRESENTATION_FACTORY_ID,
				"org.eclipse.ui.presentations.default"); 
		node
				.putBoolean(
						IWorkbenchPreferenceConstants.SHOW_TRADITIONAL_STYLE_TABS,
						true);
		node.putBoolean(IWorkbenchPreferenceConstants.ENABLE_ANIMATIONS, true);
		node.put(IWorkbenchPreferenceConstants.DOCK_PERSPECTIVE_BAR,
				IWorkbenchPreferenceConstants.TOP_LEFT);
		node.putBoolean(
				IWorkbenchPreferenceConstants.SHOW_TEXT_ON_PERSPECTIVE_BAR,
				true);
		
		node.put(IWorkbenchPreferenceConstants.INITIAL_FAST_VIEW_BAR_LOCATION,
				IWorkbenchPreferenceConstants.BOTTOM);
		
		node.putBoolean(IWorkbenchPreferenceConstants.SHOW_INTRO, true);
		
		node.put(IWorkbenchPreferenceConstants.KEY_CONFIGURATION_ID,
				"org.eclipse.ui.defaultAcceleratorConfiguration"); 
		
		node
				.putInt(
						IWorkbenchPreferenceConstants.EDITOR_MINIMUM_CHARACTERS,
						-1);
		
		node.putBoolean(
				IWorkbenchPreferenceConstants.SHOW_WORKSPACE_SELECTION_DIALOG,