title: "Remote System Explorer Operation" causing freeze for couple of seconds
body: <p>I observe "Remote System Explorer Operation" in Progress view of Eclipse after each save of Java file (so it might be related to compiling?). It makes the Eclipse unusable for 1 to 10 seconds. In some projects (of about the same size) it's quicker, in some it's slower.</p>
  
  <p>I have no idea which plugin might be the cause for it. I have <code>Build id: 20090920-1017</code>. I have quite a few <a href="http://so.pastebin.com/f3120dfe2" rel="noreferrer">plugins installed</a>.</p>
  
  <p>I have tried turning all the remote systems to <code>enabled=false</code> under Preferences | Remote Systems (whatever it means). I didn't help.</p>
  
  <p>Any idea how to solve it?</p>
  
  <p>EDIT:</p>
  
  <ol>
  <li>It doesn't happen when <code>Project | Build automatically</code> is turned off. So it's some part of the building process.</li>
  </ol>