juggledad

It has nothing to do with the css, The page template is not displaying the sidebar. Since it doesn’t build the sidebar elements, the CSS can’t be applied.

You need to fix the PHP code

So this leads me to beleive it is something about the post itself.

What I would do is go to the post and view it in the text editor (not the visual editor). I would copy the entire text portion and save it to a text file. Next I would create a new post and paste the text into it and see if this post shows the same issue. If it does, I would edit the post taking ot the leading html bit by bit till the post excerpt shows up correctly and then you will have narrowed down what in the post is causing the issue

Are you using the plugin W3 Total Cache? If so, try disabling it .

It looks like you are using a customized version of the twenty eleven theme. Do you actally have any widgets in the sidebar?

If yo do, then I would suggest that there is a bug in the themes customization and without access to the theme there is not much that we can help you with.

you have two choices (1) make them an editor – which will allow them to edit all pages and other things (see Roles and Capabilities) or (2) use a plugin like ‘role manager’ or ‘user role editor’

The access to the database is the wordpress user you specified in the wp-config.php. You could try disabling ALL your plugins (do you have many?) and switching to one of the default twenty-xxxxx themes to see if it still happens.

could it be possible you are calling the code twice? here is something to try: change the code to this

<?php if ( is_search() ) : // Only display Excerpts for Search ?>
			<div class="entry-summary">
<?php echo 'about to do the excerpt<br>'; ?>
				<?php the_excerpt(); ?>
			</div><!-- .entry-summary -->
		<?php else : ?>
[...]

Then see what shows when you do a search.