Did you clear all the browser caches? Is it possible FF is loading a cached version?
From: support-bounces@drupal.org [mailto:support-bounces@drupal.org]
On Behalf Of Nancy Wichmann
Sent: Tuesday, January 13, 2015 11:15 AM
To: Drupal Support
Subject: Re: [support] Weird Browser Problem
Yes, it appears instead of the front page. Apache doesn't show anything. It's an HTTP site.