VS 2010 Extension Manager Online Gallery - Connection issue

I am trying to connect to VS 2010 Extension Manager Online Gallery but keep getting the following error:

A connection to the server could not be established because the following error occurred: The server has returned invalid data. Please try again later.

I've tried modifying the config to include below changes as specified in some blogs/forums. However, it's of no use. Can anyone suggest how to fix it. I'm using 10.0.30319.1 RTMRel version.

    <system.net>
      <defaultProxy useDefaultCredentials="true" enabled="true">
        <proxy usesystemdefault="True" />
      </defaultProxy>
        <settings>
            <ipv6 enabled="true"/>
          <servicePointManager expect100Continue="false" />
        </settings>
    </system.net>

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--VG