I'm trying to SEO the Wordpress blog breakfasthouse.net

Right now I have two titles on the homepage as I see in the source code:

<title>TEST</title>
<title>TEST</title>

I've disabled All in One SEO Pack and I've also disabled the theme Suffusion SEO under SEO / Metatags.

I've got a static homepage. Under the WP General Settings, the Site Title is "Test"

The title of the individual static page is "Breakfast House & Home"

I would like to enable All in One SEO pack, which does work for the Keywords and Description meta tag but I still get two title tags, one coming from All in One SEO called "Breakfast House and Stuff" and one from the WP General Settings Site Title called "Test"

Here is how the homepage source code looks when I enable All in One SEO pack:

<title>Breakfast House and Stuff</title>
<title>TEST</title>

How do I get rid of the duplicate title called "Test" and only use the one from All in One SEO?

When you install that plugin you need to remove the native Wordpress title tag. It might look like:

PHP Code:

<title>
    <?php if (is_home()) { echo bloginfo('name');
    } elseif (is_404()) {
    echo '404 Not Found';
    } elseif (is_category()) {
    echo 'Category:'; wp_title('');
    } elseif (is_search()) {
    .....and so on....
    ?>
</title>

(Might look different depending on your theme, this hard coded title can be removed)

The plugin creates a title tag so that you have control over it for better SEO. Normally, WP just uses the page title.

While your there, you may also notice it is generating the keyword and description tags as well. You can remove any hard coded meta tags that are being duplicated as with the title.

Note: You won't "see" the title and other meta info the plugin is generating when inspecting your header.php source code. This is added dynamically upon page load by the plugin.

^ What he said.

It also probably wouldn't hurt to uninstall and then reinstall and activate the AllInOne plugin before using it again.