Internet Explorer 9 adds sab="" code to all html

I've been talking to the CKeditor guys about this and they can't seem to reproduce it so I'm hoping someone here has seen or experienced this.

First started with the FCK editor module, now I've since switched to the latest build of CK editor and still see it going on as a problem.

Running Drupal 6.22 with a good amount of modules. CK editor works fine with all other browsers, including IE 7 and 8.

So you edit a page in IE9 and either switch to plain text, back to full edit, then back to plain text or simply click save and suddenly the p tags, h tags, etc say h sab="some number" or p sab="123"

Settings are as follows -
Input Editor: Plain text with html corrector, html filter, and url filter
CKEditor:
Allow users to customize appearance: No
Security: HTML Filter
Settings: Always run
Minimum rows: 5
Set to exclude then a bunch of fields excluded
Default state: enabled
show/hide toggle - now set to disabled (problem still exists on save)
popup window: no
skin: office2003
UI color: default
Toolbar: basic
plugins: none
expanded: expanded
auto-detect language: enabled
enter mode: br
shift enter: p
font formats: p;h2;h3
custom formatting options: no
load method: ckeditor.js

Any help would be greatly appreciated