I upgraded today and have found most of the conversion problem (not many!) but I can't get my buttons to behave. It seems the custom styles for next/previous aren't getting priority. When I look at it in Firebug, the style shows the style from function.css and not fry the custom stylesheet.
Here's the link: http://www.wafbla.org. You'll see that the next button is mis-directed, too. Any ideas how to proceed?