Slow loading

Hi There

In the last 24 hours my site has been taking between 1 and 2 minutes to load. I have spoken with the host (just host) and they cannot help. They did say these errors show up( see below)

The website is http://www.homeinstyle.com.au

I have no idea how to go about fixing these errors as I’m not tech savvy. Please help

Failed to load resource: net::ERR_ADDRESS_UNREACHABLE http://www.homeinstyle.com.au/wp-content/themes/maya/css/flexslider.css?ver=3.8.1
XHR finished loading: “http://12-events.olark.com/nrpc/c?c=create&u=http://www.homeinstyle.c…dQCVVCK00Cf&g=ALL&q=precache08168936935253441&j=o0&version=loader-precache”. loader0.js:17
Failed to load resource: the server responded with a status of 404 (Not Found) http://www.homeinstyle.com.au/wp-content/uploads/2013/09/navBg.png
event.returnValue is deprecated. Please use the standard event.preventDefault() instead. VM27 jquery.js?ver=1.10.2:4
XHR finished loading: “http://www.homeinstyle.com.au/wp-admin/admin-ajax.php”.