Well, in different browsers I see different things.
Chrome: there is a little delay before the font loads.
Firefox: everything's ok.
Opera: the font doesn't load at all.
IE 7, IE 8: the page is broken (check here:
http://netrenderer.com/index.php)
And about fonts, it looks like their behavior is brower-specific. I use custom fonts too and in some browser the default font is loaded first, then it is changed to custom font.
P.S. Hope you know this site to generate cross-browser fonts:
http://www.fontsquirrel.com/fontface/generator