hibernate+dwr 报No converter found for org.CGLIBLazyInitializer

hibernate+dwr 报No converter found for org...CGLIBLazyInitializer
在一个ssh项目里用了dwr 报的错如下：（报错但还没影响运行 就是那一个页面响应很慢）
2009-08-04 08:56:59,843 [http-8080-2] ERROR CommonsLoggingOutput.java:75  - No converter found for 'org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer'
2009-08-04 08:57:00,015 [http-8080-2] ERROR CommonsLoggingOutput.java:75  - No converter found for 'org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer'
2009-08-04 08:57:00,015 [http-8080-2] ERROR CommonsLoggingOutput.java:75  - No converter found for 'org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer'
......还有很长就不粘贴了。

web.xml只放了关键部分

java Service 代码
public Task checkUserHaveBifurcateRole(String taskId,String userId) {try{Task task=taskDao.getTaskById(taskId);User orderUser=task.getOrderUesr();User enchargeUser=task.getEnchargeUser();if( userId.equals(orderUser.getUserId()) || userId.equals(enchargeUser.getUserId())){return task;}}catch(Exception ex){ex.printStackTrace();}return null;}

请指教在网上没找到解决方法
和http://topic.csdn.net/u/20090524/14/5da3f4de-35c8-45d6-bc73-c6b1cadfa120.html
很相似.