I'm using a child theme of Thematic 0.9.7.7. For what it's worth, I've only made a few cosmetic changes to the theme.
Anyway, I want to change the content of the sidebar - everywhere on the site, really, but in particular the Home page and the Blog page. But no matter where I add or remove widgets, these two pages refuse to change from the default side content (Search, Pages, Categories, Archives). I've tried deleting every widget from every possible sidebar, as well as moving, editing, and adding widgets to Primary Aside, Index Top, Single Top, and Page Top. None of these has any impact on the contents of the sidebar.
Am I missing something? Or do I need to dive into the php just to edit the sidebar on the home page?