title: Session issue with codeigniter (CI)
body: <p>I am getting php session error on my live developed using codeigniter </p>
  
  <pre><code>A PHP Error was encountered
  
  Severity: Warning
  
  Message: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /home/userts4m/public_html/development/relatioweb/admin/index.php:1)
  
  Filename: Session/Session.php
  
  Line Number: 140
  
  Backtrace:
  
  File: /home/userts4m/public_html/development/relatioweb/application/admin/controllers/User.php
  Line: 9
  Function: __construct
  
  File: /home/userts4m/public_html/development/relatioweb/admin/index.php
  Line: 293
  Function: require_once
  </code></pre>
  
  <p>Working at localhost fine. But when i uploded at server we are facing this issue.</p>
  
  <p>What should i do ...</p>