title: Selenium WebDriver.get(url) does not open the URL
body: <pre class="lang-py prettyprint-override"><code>from selenium import webdriver
  from selenium.common.exceptions import TimeoutException
  from selenium.webdriver.support.ui import WebDriverWait # available since 2.4.0
  import time
  
  
  # Create a new instance of the Firefox driver
  driver = webdriver.Firefox()
  
  
  # go to the google home page
  driver.get("http://www.google.com")
  </code></pre>
  
  <p>This opens a Firefox window but does not open a url.</p>
  
  <ol>
  <li>I have a proxy server(but the address bar does not show the passed url)</li>
  <li>I have two Firefox profiles.  </li>
  </ol>
  
  <p>Can 1 or 2 be an issue? if yes, then how can I resolve it?</p>