<li>As of Drupal 5.2, additional step is required: locate file named <code>settings.php</code> inside your drupal directory (usually <code>sites/default/settings.php</code>) and set <strong><code>&#36;cookie_domain</code></strong> variable to the appropiate domain (remember to uncomment that line). If you not do this, FCKeditor will claim that file browser is disabled</li>