More Tag Not Displaying

I can’t get the more tag to display. I have this in my post:

<!--more-->

My template has this:

<?php the_content('<p>Read the rest of this review &raquo;</p>'); ?>

Switching to the default Kubrick theme didn’t help.

I see this in the code for the page:

<a id="more-51"></a>

So, the link tag is in there, but the link itself and the link text won’t display.

Any ideas?