Hi,
Thanks for letting me know about this bugs.
To reduce the page loading; we have used "font-awesome" to get those icons. By the way, YOU HAVE TO BE CONNECTED TO INTERNET TO SEE THOSE ICONS. Because the icons are actually a font and gathered from the fontAwesome server.
More info:
fortawesome.github.io/Font-Awesome/
But the "font-awesome" must have been supported by all modern browsers. (including firefox and IE)
Can you please try to browse our DEMO with your current Firefox and IE? And see if you are having the same problem in our DEMO as well?
demo.flexiblewebdesign.com/asymmetric/
If you are having the same problem in our DEMO as well please let me know. In the worst scenario, i will replace the font-awesome icons with the ordinary graphic icons and make this patch permanently in the Asymmetric template.
Regards,
Support