If your site faces heavy load, custom fonts (using @font-face) could bring you down further. The page linked here is, at the time of writing, loading, but the fonts it wants to use (about 10 are linked) aren’t loading because the site is being hit hard. Whereas a normal page might be missing images, because of the custom fonts, this page is blank. A few underlines are shown, but that’s all. Safari 4 bug?