WordPress Site homepage loading slow

Hi all,

I am writing here because the homepage of a wordpress site I am developing is loading very very slow I am having trouble trying to identify what could be causing the delay.

The site is http://tdcsa.com.ar/

I have tried using YSlow component in Firefox, but it doesn’t seem to be working. Even if I closed and re-opened the browser the “Run Test” button of the component is not working.

Could any of you please let me know what could I do to make the site load faster? I don’t have a lot of unnecessary plug ins installed. I have basically installed a theme called “Omni” and its plug ins, haven’t installed much more than that.

Thanks in advance,

Fermin