extra space beneath forum

my forum shows about 50 pixels of blank space below it. Has my forum been properly embedded? Or am I doing something wrong?

[Hugo <Nabble>]

Please post a link to your page and we will take a look.

[mywaytoo]

I have just commented on a 'blank screen' at http://nabble-support.1.n2.nabble.com/lots-of-things-td5949648.html

Can't find it offhand...