Problem with html or something

I don't know if you can help me but in this page

http://www.dsprotectioncorp.com/

im having problem with almost everything, some articles show dupicate without no reason and the image in license doesn't appear sometimes..i don't know if if the problem with the template or with html, or whit the hosting i don't know jajaja,

If you can help i will really appreciate
thanks everybody

Firstly please check that cache is disabled in your site, maybe wrong configuration is causing this problems.