Front page showing duplicate recent post in my wordpress site

Hi Guys,

My WordPress site was running fine and I know i know very less about WordPress , though I have managed it quite OK. Now, suddenly A big problem came to me and I cant get rid of it.

I have used to have 3 post on my front-page but now they showed up as duplicate post till footer, without headline in duplicate post. And also some recent post after the duplicate posts as well. This front page is a big mess now and i am feeling too tired finding solutions in several forums. Here is the site address

Anyone help Please !

Thanks in advance.