Re: layout problem, missing closing div tag?!
It does fix the page where you “add new” though, right? So, what is different between the front page and the “add new” page? That’s where you’ll find your problem I think. Look at the modifications you made and find out what is different between the two pages (front page and add new page.)
It definitely does not belong there and is not needed on the “add new” page and it fixes the layout issue there. I did not try removing it from the front page.
Also, you can validate the xhtml which will point to some problems too. I use the Web Developer extension for Firefox, but you can manually validate your pages here too: