What is WRONG with this site? Choppy, overlaid, etc.

http://lifeaftertheoilcrash.net/

This is the site that originally propelled me into being an oil awareness activist about 4 years ago and had me getting a group together to arrange briefs to NSW politicians, but... it just looks terrible in FF3. What is WRONG with the layout? I'm still not a web-designer yet... just keep getting side-tracked with other business and family priorities... but what has gone wrong with this?

But if you go down the page does the text not wrap properly, especially the stuff in italics, and does the city image overlay the text? That's sort of happening in FF3 for me.

So whatever he's using, he's ticked some 'absolute position' or 'fixed position' option in his web design package hey? Thanks for that.