Bug 189694 ApplicationWindow#run() can hang Eclipse due to Menu#isEnabled
In ApplicationWindow#run() we call Menu#isEnabled to cache our enabled state. This actually crawls all of the children of the menu to determine the state. When the Shell is disabled this will return true and so when the shell is re-enabled all of the menus will be inactive. I will be attaching a Steve approved patch.
bundles/org.eclipse.jface/src/org/eclipse/jface/window/ApplicationWindow.java
return coolBarManager;
    }
    /**
     * Returns the control for the window's toolbar.
     * <p>
     * Subclasses may override this method to customize the tool bar manager.
     * </p>
     * @return a Control
     */
    protected Control getToolBarControl() {
        if (toolBarManager != null) {
        	if (toolBarManager instanceof IToolBarManager2) {
				return ((IToolBarManager2) toolBarManager).getControl2();
			}
        	if (toolBarManager instanceof ToolBarManager) {
				return ((ToolBarManager) toolBarManager).getControl();
			}
        }
        return null;
    }
    /**
     * Returns the control for the window's cool bar.
     * <p>
     * Subclasses may override this method to customize the cool bar manager.
     * </p>
     * 
     * @return an instance of <code>CoolBar</code>
     * @since 3.0
     */
    protected Control getCoolBarControl() {