fixing broken 2.5x rigs for 2.57

Hi all,
I’ve been looking around for info about updating 2.5x rigs for 2.57. Most of my favourite ones are broken right now.
So far I found out about the “FCurve/Driver Version Fix”:

Now there’s the issue about the rig ui scripts not working.
Not being a big python guy, I haven’t really been keeping up with recent changes in the API, but apparently something happened so that the old way of drawing ui panels no longer works.
Does anyone have clues for a script kiddie like me about how to update these scripts for 2.57?

No idea if this is of any use but anyway : http://www.blendercookie.com/2011/03/03/tip-updating-the-ikfk-script-for-api-changes/

Absolutely spot on. Cheers!