ultimate facebook alignment issue in FB like box widget

Hi there

I've noticed on all my sites that the FB like box widget needs a clear: both; in it to align the text properly... you can see what I mean here:

http://accountantslist.com.au/members/

I'm more than happy to put it in, just don't want to lose it with an update or have to put it into every theme.

Can someone fix this for me pls

cheers

Stef