Susan, it is a chunk on the template with a TV in that chunk. A while back I had the TV right on the template but went to a chunk as I added a phx element.
The affected part of my template looks like this:
<div id="extras">
<div>{{AjaxSearchMenu}}</div>
<div><p>{{WayfinderRight}}</p></div>
<!-- <div id="glance"> <p>[*rightcolumn*]</p></div> -->
<div> {{glance}}</div>
</div>
What is happening, I have a comment on my template, which was the code prior to adding the "glance" chunk that replaced it. I should have erased it, but I left it there to remind me what I had originally done. That comment, however, is still rendering the code in "rightcolumn" TV and putting that code in a comment on the page. Not the problem yet, though I guess I am surprised at the TV in the comment still being rendered. When I added the Facebook badge to the template variable later, I added the code Facebook gave me for the badge which included the comment at the beginning and I just left the comment with the code. All of that was then rendered in that comment on the template. So the code was rendered twice: once enclosed in a comment on the template and then the actual rendering in the "glance" chunk that now contains the TV. But the problem seems to be the comment within a comment on the rendered page in Firefox 10: The Facebook Badge comment in the TV within the comment on the template. I took the comment out of the TV and it renders fine in Firefox 10. Up until now I had not had a problem with that code in other browsers.
I hope that makes sense. That page lost all formatting, but all the other pages with the same template were fine, however, none of those other pages have that comment within a comment as that is the only page that I added the Facebook Badge code to.