title: Ipython notebook lauch being failed
body: <p>When I try to run ipython notebook at my terminal. The browser opens with /localhost:8888/tree on the address bar but fail to load the interface instead it keeps on loading the page. Moreover my terminal keeps on printing the following block of code over and over again. </p>
  
  <p>I have UN-installed zmq many times but in vain. I have used Ipython from different sources like ubuntu servers/ github repository but the same problem persisted.</p>
  
  <pre><code>Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/zmq/eventloop/ioloop.py", line 330, in start
    self._handlers[fd](fd, events)
    KeyError: 3
    ERROR:root:Exception in I/O handler for fd 3
  </code></pre>
  
  <p>One reason for this behavior was pointed out by a cool guy at #python channel at freenode (I forgot his nick) that my packages are messed up due to repeated use of PIP and Apt simultaneously before this situation.</p>
  
  <p>Any help would be greatly appreciated.</p>