quick whois lookup revealed ns13.wordpresshosting.com.au as your name server.
wordpresshosting.com.au site tells me that unless u're paying 99/month for dedicated server - than you re probably chuggin along on plain old SHARED hosting plan - which sucks for anything more than a home page!
Last time I checked - my shared hosting(ixwebhosting) was hosting something like 90-100 sites on a singlecore 2.8Ghz. I mean - WOW....wow... So yeah - all websites on that server were throttled to only 1% of that PC's capacity or something like that.
also..mmm... I checked it with Yslow and most of the optimizations that you would really benefit from haven't been done. Gzipping and combining css/js files would save you site half of your loading time. Like typeface.js file is 205 Kb can be gzipped to around 50 kb - that's big. Also ... IMHo - I'm questioning the need for this file entirely. Looks like it *ucks with fonts/css using JS which is a bad idea cuz all messing around with fonts should be done through CSS itself - this is what CSS has been designed for.
Also - coders don't used boxed cms like wordpress - coders use php frameworks and code from scratch (CI, Zend etc). Designers like Wordpress cuz it's easy - but sucks for customizations/optimizations like this one.
Anyway - hope this help pal.