FCK must be extra wide to get correct line breaks in IE 6/7

I have a page with content that looks like this in IE 6 / 7:


When the page content is viewed in FCKeditor, the editor has to be made wider than the actual content in order to get the lines to wrap in the same places as on the real page. And the line wraps still can't be made look exactly the same - why is this?


In Firefox, the page content *can* be made to look the same in FCKeditor *without* having to make the editor extra wide.




Anyone know what's the problem with IE? I use the same CSS styles for the FCKeditor area as for the page itself.