So I fixed my RSS and Atom feeds on this Wordpress 2.5 powered blog.  Apparently there was an extra blank line in one of my theme function files.  This put a blank line at the top of the XML documents making them invalid.

Interestingly, it also fixed the issue I was having with the Visual editor not working for new posts.  I have been beating my head against the wall for a few days on that one.  All better now!

It appears that the WordPress folks took my good idea and incorporated it into the core. As such I will not be updating this project. Such is life!