Recent Posts Widget Renaming Post Titles

Hello all. I’m experiencing something very weird and it happens in both my theme as well as the default TwentyTen. I’ve got the WP E-commerce plugin installed with the Recent Posts widget in the sidebar.

When you click on the Product Categories page, the Recent Posts display properly in the sidebar:

http://hangingvalleyphotography.net/galleries/

When you choose a Product Category from the list of Categories, the Recent Posts titles change to display that Product category:

http://hangingvalleyphotography.net/product-catalog/grizzly-bears/

And when you click on an actual product, the Recent Posts titles change to the Product Name.

http://hangingvalleyphotography.net/product-catalog/grizzly-bears/grizzly-bear-01/

Does anyone know what could be happening and how to fix it? Thanks for any help!