taking 10+ sec to load

[somits1]

Hi, I am using prestashop 1.5.6 english version, I have deleted 4 files from my httpdocs folded "product.php, productdownload.php, productsale.php, product supplier.php and configuration.php"

After deleting these file my site was not working then i paste these file again on same location. 

But after that my site is working too slow. taking 10+ sec to load. 

please help me to solve the issue. please check my site http://slmobileprice.com

 

Thanks,

Somit