Update: Turns out the theme was not the problem. I’m currently tracking down which plugin is the culprit.

The lovely free theme, that I had just recently started use, apparently broke with the latest WP upgrade.  That’s why I’ve had to revert to this theme. I’ve contacted the developer of the other theme I was using but given that it was free I’m not holding out much hope that he’ll be willing or have the time to fix it.

Sigh….