I've recently put up an Ubercart application, and wanted the Categories in the block to expand showing the products below them. The products were all showing in the grid in the main section, but not in the block.
I've found a work-around on the Ubercart site:
http://www.ubercart.org/forum/support/4971/navigation_question
With a bit of tweaking, the categories are now showing with the products, as well as if you're viewing a product.
