BuddyPress.org

I did the same concerning the columns, but this is not what brings the ie Problem, its some kind of a problem with margin: 0 auto; in body.

If you open buddypress demo and you have a big screen you will see (on making ie browser smaller) that elements like avatars and some other content are getting weird.

I think this is some kind of a serious bug, which needs to be fixed in next versions.. I was centering/scaling down buddypress (because now it looks much better (; ) and got confronted with this problem.. Maybe a Javascript could fix that..