Here is the site I am working on http://www.peachhomeloans.com.au/
The top menu looks completely different in IE9 (looks lousy ) than it does in EBMM or Chrome or Firefox - I have had to change it many times as colours just don't display as selected ie: grey becomes green - or black etc.
Update I had menu layering problem but figured that out but the width calculation is different for IE and so if I get word wraps in IE and not in others so I have to manually adjust HTML to make more room for the menu and then it looks crap in Chrome and Firefox