title: Cannot connect to the real github.com in Chrome
body: <p>Recently, when i use Chrome to visit github, i meet the following error.</p>
  
  <p><strong>Cannot connect to the real github.com</strong>
  Something is currently interfering with your secure connection to github.</p>
  
  <p><strong>Try to reload this page in a few minutes or after switching to a new network.</strong> If you have recently connected to a new Wi-Fi network, finish logging in before reloading.</p>
  
  <p>If you were to visit githu.com right now, you might share private information with an attacker. To protect your privacy, Chrome will not load the page until it can establish a secure connection to the real github.com.</p>
  
  <p>It works well in Firefox/Safari, my desktop environment is Mac OS Mavericks, 
  anybody can help on it?</p>
  
  <p>Many thanks</p>