QUOTE(arthurakay @ 16 Jun, 2009 - 12:17 PM)

I know nothing about Cold Fusion, so I'll apologize in advance...
I've never seen anything like what you describe in IE7 or IE8, especially relating to AJAX. In my experience, bugs like these are always a CSS or JavaScript issue that the developer missed and NOT the fault of the browser.
Are you using built-in CF libraries for your AJAX functionality? I know that ASP.NET's built-in AJAX libraries are somewhat sketchy in certain situations, so I always use JavaScript libraries like jQuery or ExtJS and write the code myself. If you're using some built-in library, it's possible that it's out of date or just plain crappy.
It is built in library's, but they work just fine on Firefox and Safari. One other really weird this is that I have a backend editor for my clients to edit the content on their pages, and when they bold text it wraps it in <b></b>. When I look at it on IE 7 or 8 it sometimes won't show the text bolded. I had to change the editor to put <span style="font-weight:bold; "></span> aroung the text.