[android-developers] SDK Manager does not fetch any package for installation (no error reported)

I have Android SDK Manager v20 on Windows 7 32 bit

 

It does not fetch any package for installation. And there is no error reported

 

Fetching http://dl-ssl.google.com/android/repository/addons_list-2.xml

Fetched Add-ons List successfully

Fetching URL: http://dl-ssl.google.com/android/repository/repository-7.xml

Done loading packages.

Fetching http://dl-ssl.google.com/android/repository/addons_list-2.xml

Fetched Add-ons List successfully

Fetching URL: http://dl-ssl.google.com/android/repository/repository-7.xml

Done loading packages.

Fetching URL: https://dl-ssl.google.com/android/repository/repository-7.xml

Done loading packages.

Fetching URL: https://dl-ssl.google.com/android/repository/repository-7.xml

Done loading packages.

But there is nothing fetched. What could be the reason.

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