title: What is TortoiseHg Overlay Icon Server
body: <p>I just install TortoiseHg, to act as Mercurial client tool.</p>
  
  <p>However, in my Vista, whenever I start, there is a <code>TortoiseHg Overlay Icon Server</code> at my notification bar.</p>
  
  <p>Is quite annoying. What is the purpose of that? Can I disable it?</p>