This page contains the following errors:

error on line 6 at column 12: Entity 'htmlDTD' not defined error on line 9 at column 14: Entity 'globalDTD' not defined error on line 12 at column 17: Entity 'certerrorDTD' not defined

Below is a rendering of the page up to the first error.

Untrusted Connection

This Connection is Untrusted

You have asked Firefox to connect securely to www.facebook.com, but we can't confirm that your connection is secure.

Normally, when you try to connect securely, sites will present trusted identification to prove that you are going to the right place. However, this site's identity can't be verified.

What Should I Do?

If you usually connect to this site without problems, this error could mean that someone is trying to impersonate the site, and you shouldn't continue.

If you understand what's going on, you can tell Firefox to start trusting this site's identification. Even if you trust the site, this error could mean that someone is tampering with your connection.

Don't add an exception unless you know there's a good reason why this site doesn't use trusted identification.