title: What exactly is the 'Waiting for response' msg on Firebug's Net tab?
body: <p>As sou can see from the screenshot most of the time spent is waiting for a server response (thats the purple coloured area).</p>
  
  <p>What exactly is that server response time? Is the server too slow? Is my connection too slow? Can't the server process much information at once (I've got many files there, I know I'll combine them to fewer)? What do I have to do to minimise that waiting time?</p>
  
  <p>PS. all the data are on the same server but I'm using subdomains so that the browser can process more files at once.</p>
  
  <p><img src="https://imgur.com/DwAXL.png" alt="firebug net tab"></p>