HTML Headers showing in page after AJAX call

Hello,

I have an odd thing happening. I'm trying to use the Radiant CMS
system, and am seeing
a problem with some of the ajax calls. I've posted to the Radiant
mailing list, but I think
that it's more a Rails / Apache / fcgid problem. My environment is
Ubuntu Linux with Apache 2.0.55
and fcgid.

The problem is, when I click on a link that will expand a child item
to show the items under it,
an ajax call is made and the items (pages) under are displayed.
However, there is also some HTML
headers that are displayed on the page. I've used Firefox and the
Firebug extension to try and see
what's going on. (This seems to happen only under fcgid - using
script/server or just cgi it does
not happen)

Clicking the item to expand the current level will return (in Firebug):

Headers:

Server: Apache/2.0.55 (Ubuntu)
Cache-Control: no-cache

Response:

Hello,

I have an odd thing happening. I'm trying to use the Radiant CMS
system, and am seeing
a problem with some of the ajax calls. I've posted to the Radiant
mailing list, but I think
that it's more a Rails / Apache / fcgid problem. My environment is
Ubuntu Linux with Apache 2.0.55
and fcgid.

For reference, here is the headers from Firebug using the demo Radiant site:

Server: lighttpd | wiseheart design
Content-Type: text/html;charset=utf-8
Cache-Control: no-cache
Set-Cookie: _session_id=fe5adcc2f41b57331769e4be7dea76f8; path=/
X-Powered-By: The blood, sweat and tears of the fine, fine TextDrive staff
Served-By: TextDrive
Vary: Accept-Encoding
Content-Encoding: gzip
Content-Length: 533
Connection: close

(Granted, they are using lighttpd and I'm using Apache...)

Anyone?

Has anyone seen this problem? With fcgid and ajax? At all??