There was one offending Blog Entry that was causing it. That Entry has been edited.
One aspect about web html pages is that sometimes an unbroken line of text never wraps. As an example, if you type "=============" and so on forever, without any space in between, that line of text will never wrap, causing the width of the entire page to expand. This is a peculiarity with html.
Bloggers are requested to put in some breaks in text, as in natural English language. Please don't type in a continuous line of text...
more... without a space.
Whenever you see this phenomenon, just examine all the Blog Posts in the page. You will find one Blog Post with text extending all the way to the right without any space.
Thanks.