Same with Fx4 on OS X. Chrome 12 skips ligatures entirely (so difficult reads difcult), while Safari 5 just renders a big boxed nothing in lieu of the document.

Same with Fx4 on OS X. Chrome 12 skips ligatures entirely (so difficult reads difcult), while Safari 5 just renders a big boxed nothing in lieu of the document. There seem to be some trouble with curly braces around the emails in the header.