It's normal situation if a table model is updated by a non-Swing
thread.
IMHO, If you've extends an AbstractTableModel class, you can override
the fireTableChanged method:

<pre>
public class Model extends DefaultTableModel {
   private static final long serialVersionUID =
-5792073620222974655L;
   @Override
   public void fireTableChanged(final TableModelEvent e) {
       if (SwingUtilities.isEventDispatchThread()) {
           super.fireTableChanged(e);
       } else {
           SwingUtilities.invokeLater(new Runnable() {
               @Override
               public void run() {
                   fireTableChanged(e);
               }
           });
       }
   }
}
</pre>