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Login and Go to Main Menu
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Login to the Administrator area of your site and click "Menus" then "Main Menu".
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Click "Home" in the list of menu items.
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On the right-hand side, click "Parameters (System)".
There are two ways to fix this problem:
1) You can change "Welcome to the Frontpage" to something that matches your site.
2) You can set "Show Page Title" to "No" and just remove it entirely.