不知是怎么回事？是不是，有人说了被关键字过滤的话了啊。被GFW封了ip？
可能很多人不知道，帮你获取网页的代理服务器到网站之间是不加密的，因为很多网站不支持加密。

这是返回的页面
The requested URL could not be retrieved

While trying to retrieve the URL: http://v.youku.com/

The following error was encountered:

    Unable to determine IP address from host name for v.youku.com

The dnsserver returned:

    Server Failure: The name server was unable to process this query.

This means that:

The cache was not able to resolve the hostname presented in the URL.
Check if the address is correct.

Your cache administrator is webmaster.
Generated Sat, 26 Dec 2009 08:20:41 GMT by google.com (squid/2.7.STABLE6)

会尽快处理

谢谢