I had WP 2.9.1 installed and Atahualpa 3.4.1 installed at my site at http://BusinessBooks101.com, and everything was working fine regarding excerpts showing up on my category pages and archive pages.
On the morning of Feb 11th, 2010, I updated WP to 2.9.2, and since then none of my excerpts are showing up on the category pages or archive pages for any new posts that I create.
I recently updated the theme to 3.4.6 to see if that solves the problem which it did not.
I can however go to the theme settings and change the settings on the 'Post or excerpts on CATEGORY pages' to 'Full Posts' and the full post shows up on the category pages for all posts. When I change it back to 'Only Excerpts' the excerpts only show up for those posts made before Feb 11th, which is before I upgraded to WP 2.9.2.
Anyone have any idea what is going on?
Click on this link to see the excerpt not showing up on a recent post:
And here is a link to my archive page showing excerpts showing up before I upgraded to WP 2.9.2: