title: Eclipse: MarketplaceDiscoveryStrategy failed with an error
body: <p>I've just installed Eclipse Helios version 3.6.1 on my Windows 7 64 bits machine.
  But, when I want to open Eclipse MarketPlace I get this error:</p>
  
  <p>MarketplaceDiscoveryStrategy failed with an error.</p>
  
  <pre><code>Unable to read repository at 
  http://marketplace.eclipse.org/api/p?product=org.eclipse.epp.package.jee.product&amp;os=win32&amp;runtime.version=3.6.0.v20100505&amp;client=org.eclipse.epp.mpc.core&amp;java.version=1.7.0_07&amp;product.version=1.3.2.20110218-0812&amp;ws=win32. 
  Address family not supported by protocol family: connect
  </code></pre>
  
  <p>Any solution please?</p>