我的netbeans6.5里面，《入门指南》和〈演示与教程〉都点不进去是怎么回事啊，出错如下：
ERROR
The requested URL could not be retrieved
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While trying to retrieve the URL:
http://www.netbeans.org/kb/docs/java/quickstart_zh_CN.html
The following error was encountered:
•Access Denied.
Access control configuration prevents your request from being allowed at this time. Please contact your service provider if you feel this is incorrect.
Your cache administrator is root.
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