I'm not displaying any left sidebar, and the center column where the page content was being displayed was narrower than it needed to be.
So I went into ATO, Style POSTS and PAGES, and in the POST Container section I set a width of 750px. I did the same in the HEADLINE Box, and in the Body Box. This displays perfectly in FF and Chrome, but of course not in IE.
In IE the part of the page displaying the content is only about 3/4 the width it should be, and there's a big blank column between the body text and the rhs sidebar.
What to do?