UPDATE: Ah! It turned out it was the PodPress plugin (that allows me to publish the podcasts throuhg the blog). The recent update corrected the problem.
It may or may not be WP 2.1 (in fact, I am sure it is my settings somehow, but I didn’t change anything in the upgrade) but in reading my feed via NetNewsWire I no longer see anything but text, no images, links, or formatting. Other sites seem fine.
So, if you are not seeing what you expect in your news-reader, I apologize. Just head to the blog to see it in all its glory.