[SOLVED] Long text on a Page gets cut off by a question mark: please advise

Hi, I love the theme, but I'm running into this problem: I'll be happily typing away (in HTML, usually), and when I Publish the Page, most of the text is gone.
We're talking about maybe 400 words.

I've attached a screenshot of the error.

Here's my other information:

site: http://www.modernmediajapan.com
Atuahualpa 3.4
Wordpress 2.8.2

Problem exists in:
Firefox 3.5.1
Safari: 4.02
Camino: 1.6.8

please let me know what I need to do: I have a business page to publish and can't move forward until I know. Thanks so much!

Terri