Font-awesome icons not showing

Steps to reproduce the problem.

1) Clear browsers cache
2) Apply hueman theme -> font-awesome icons not shown
3) Open site/wp-admin/ (asadmin) and return back to the site => icons become visible
4) Log out from wordpress (as admin) and clear browser cache => icons are not shown again

Maybe somebody can tell me what files should I change to replace social-networking font-awesome icons in primary sidebar to my custom images? And also how to remove arrows in the upper/main menu (arrows that indicate that there are some submenus)?

Thanks in advance!

The font was not loaded. Fixed by added following to style.css.

@font-face {
font-family: ‘FontAwesome’;
src: url(‘fonts/fontawesome-webfont.eot’);
src: url(‘fonts/fontawesome-webfont.svg#fontawesome-webfont’) format(‘svg’),
url(‘fonts/fontawesome-webfont.eot?#iefix’) format(’embedded-opentype’),
url(‘fonts/fontawesome-webfont.woff’) format(‘woff’),
url(‘fonts/fontawesome-webfont.ttf’) format(‘truetype’);
font-weight: 300;
font-style: normal;
}