CS4 Problem with Template Updates

Question

There's another thread on this subject, but I couldn't see any final resolution.
I'm having a problem with Template Update.
I  have all pages in site linked to a single template.  I built the template 1st and  then created each page from the template using normal method.
When  I now make a change to the template, I save the template and it  automatically saves and opens a box to select pages to update. I  do NOT have to use the Updates feature on the top menus, but I have done  that too just to try different things. When I select all the files,  it updates them all, most of them correctly. BUT, one or several of them  will have a NEW Main Content (and sometimes header) superimposed on top  of the existing Main Content (or header). It shifts the page downward and to the right.  By the way, down below the screwed section, the content is all still there and the original template is still intact under the screwed up area.
To fix it, I create a new page from  the template and start over inserting the Main Content, which is nothing  special, just formatted text.  Next time I update, that same page will  always get screwed up again, but sometimes 1 or more different pages  will also get screwed up in the same way, always with a new nested Main  Content area (on top of the original or sometimes pushed down half a  page).
I thought it might be because of a nested Main Content in that section of the template, but I see none, or any other abnormal html.  It does not do this to all 20-30 pages, just one every time and one or more random ones.  I see nothing in html different from one page to the next.
Don't know how to attach documents to this, but I have the template and two of the screwed up pages to send.
Charlie
[email protected]

Answer 1

The site is http://www.michaelchekhov.net
Public directory is /public_html, but that's the root, so the links below should work.
These pages are out of their normal directory, so the supporting  links won't work, but you can see the code. Look at the home page and  you can see what all the pages are supposed to look like.
The template which created the problem with the pages below is at /support/TEMPLATE index.dwt
The page that consistently fails is called poatool.html - the bad one is at /support/BAD poatool.html
A 2nd page that failed on that UPDATE is there also - /support/BAD bibliography.html
The currently working copy of the page that fails everytime is /articles/poatool.html.
Thanks.
Charlie