title: Eclipse: All my projects disappeared from Project Explorer
body: <p>It seems like all my projects (except one) disappeared from the view Project Explorer.</p>
  
  <p>I'm using <strong>Eclipse Java EE IDE</strong> for Web Developers.<br>
  Version: <strong>Helios Service Release 2</strong><br>
  Build id: 20110218-0911</p>
  
  <p>Note: all the projects are present on the file system.</p>
  
  <p>How to bring them back? Any ideas?</p>