this isn't an FCKEditor problem as such, its a HTML/browser compatibility problem. The HTML is using a combination of font-size: xx-large and font-size: larger, Firefox is rendering it fine, but its confusing IE6, also, IE6 is looking at a line-height: 16px and overlapping the two headlines.
I suggest you look at implementing proper CSS styles for the page, you'll get better cross-browser results than using the font-size options.
As a quick fix, you could try removeing the line-height:16px; on line5 from the file bobe.css.
To reinterate - this is not an FCKEditor problem, you would get similar results if you were editing using any inline HTML editor (such as TinyMCE, Textarearich etc) or even Dreamweaver.
Re: FIREFOX displays perfect BUT with IE its completely cocked u
I suggest you look at implementing proper CSS styles for the page, you'll get better cross-browser results than using the font-size options.
As a quick fix, you could try removeing the line-height:16px; on line5 from the file bobe.css.
To reinterate - this is not an FCKEditor problem, you would get similar results if you were editing using any inline HTML editor (such as TinyMCE, Textarearich etc) or even Dreamweaver.