title: Where does Eclipse get list up update sites from?
body: <p>Yesterday I installed Eclipse 3.7.2 (Indigo) and I'm trying to configure it.   This is the 32 bit version on a 32 bit Ubuntu system.  When I do a "Check for Updates" it returns the following error:</p>
  
  <p><em>'Contacting Software Sites' has encountered a problem.
  Unable to read repository at http:/android/eclipse/content.xml.
  Host name may not be null</em></p>
  
  <p>Note the <strong>single slash</strong> after "http:"</p>
  
  <p>Where does it get this URL from and how do I fix it?   . . . N.B. this URL is <strong>not</strong> in the Available Software Sites section of Install/Update under Preferences.</p>
  
  <p>Thanks in advance.</p>