Running a test where the bean is repetedly added and removed to a frame, showed
that the office looses track of the count of open frame. That is the small cross
in the menu bar is not there. When one open a new window (menu Window->New
Window) and close that window then the cross appears.

       try{
           
           final OOoBean bean = new OOoBean();
           java.awt.Frame frame = new java.awt.Frame("OpenOffice.org Demo");
           frame.add(bean, BorderLayout.CENTER);
           frame.pack();
           frame.setSize(600,300);
           frame.show();
           bean.loadFromURL("private:factory/swriter", null);
 
           for (int i = 0; i < 100; i++)
           {
               frame.remove(bean);
               frame.add(bean, BorderLayout.CENTER);
               frame.validate();
           }
           frame.addWindowListener( new WindowAdapter() {
               public void windowClosing( java.awt.event.WindowEvent e) {
                   try {
                   bean.stopOOoConnection();
                   } catch (Exception exc) {
                   }
                   
                   ((java.awt.Window)e.getSource()).dispose();
               }
               
           });
           
       } catch(Exception e) {
           int a = 3;
       }       
   }