Thanks jkaa – I followed your suggestions but didn’t have the same joy. It did rid the home page of the unwanted widgets (though seemed to mess with the menu somewhat).
However, it still didn’t get my sidebar widgets working on other pages. I had it all looking sweet earlier, then noticed the upgrade to the theme, and since then it’s not showing the sidebar widgets properly (unless I enable them on the home page too).
Surely this is a bug or oversight? Or maybe I am being stupid? (it has been known)