_site_name on all page meta titles

I am having this problem where on every page, I see “_site_name” and then the page/category name. Any idea what could be causing this problem??

[url]http://www.mygamernation.com/[/url] is the url, thanks in advance for any help.

Also…I am not able to remove/edit any of the information that is on the home page through the “site layout” page in the admin section…please help!!!

Ixnay on the second post…I realized I posted an image as a banner on the home page so that problem is solved.