<div class="width50 floatright"> <p>Text not editable in IE</p> </div> <p>text is editable in IE</p>
div.width50{
width:50%;
}
.floatright{
float:right;
}

http://stackoverflow.com/questions/1796001/ckeditor-ie8-issue
http://dev.ckeditor.com/attachment/ticket/4682/4682_3.patch
http://alfonsoml.blogspot.com/2009/12/recompressing-ckeditorjs-to-fit-your.html

Re: div container, classes/layout applied, not editable in I
Re: div container, classes/layout applied, not editable in I
I have just installed 3.3 elsewhere and can't recreate the issue so you are right.