I just get the XML files returned unprocessed. Why is my web server not redirecting requests to Cocoon?
Check that you followed the installation instructions exactly. There is a bug in mod_jserv that makes it dependent on its configuration position. If you use ApJServHandler you should change this to more standard Action and AddHandler. If you previously installed an old version of Cocoon, re-read the installation instructions to find a solution for this problem. (Thanks to Dan Egnor for finding and solving the problem).