I have uploaded the Q & A to a basic WP installation (version 3.2.1).
I am using a child theme of the TwentyEleven Theme.
The layout on the Q & A pages is left without margins and the text areas are cut off.
The isue I am having is that I cannot change the css values or style the pages due to on page css. This theme would greatly benefit from a css admin page - but at the very least you should be able to change the general.css file.
I have attached images of the page on the child theme (blue background) and also tested it on the TwentyEleven theme without sidebars - the results are identical.
You cannot view the live site due to it being behind maintenance mode plugin