In short: It's the typekit fonts. I had experimental iPad/iPhone support enabled, which works fine with iOS 4 Mobile Safari but likes crashing previous Mobile Safari versions. I just disabled it.
Long version: we have a dedicated mobile version of the site but we never got around to updating that before the launch so we disabled it.. had some other issues too and the content was all outdated. So a mobile friendly version of the site will be built soonish. I just wish jQuery Mobile was here already so I could build it with that. :)
