Just installed the latest WordPress and started modifying the new Twenty Eleven theme, and in Firefox there are these incredibly annoying 30-ish pixel gaps on the left and right of the page, which firebug indicates are due to the body margins... but when I look through the CSS for 'body' and all the classes applied to it I see no margins! At least none which aren't overridden. This doesn't happen in IE or Chrome BTW.
Does anyone know what I'm missing here? It's got to be something simple...
Thanks in advance!