Using IE9 I have the following problems:
No carriage returns.
Typing posts are black test on grey background.
Frequent logouts (definately less than 45 minutes).
Unable to edit posts.
Using Firefox (not sure of the version as it's on my home computer and I am currently at work) all seems well.
PS - To insert carriage returns, I copy and paste this post into notepad, edit, then copy and paste back into the forum post box.