wp_list_comments’ paginated URLs

I run several WordPress sites, but only one uses a theme that doesn’t predate more recent versions of WP, that being

http://wordpress.org/extend/themes/this-just-in

I noticed that, instead of the intricate loop used in my other themes to display comments, this theme’s comments.php file uses a shorter (newer?) command:

<?php wp_list_comments(); ?>

A problem arises when trying to link to a particular comment. For example, clicking on the date on this blog post’s one comment:

http://www.challengeblog.org/2009/05/dont-count-blisters/

Results in this URL:

http://www.challengeblog.org/2009/05/dont-count-blisters/comment-page-1/#comment-11

I’ve never seen a WordPress URL of that format before, and it doesn’t work on my site. What does work, and is more standard, is to remove the /comment-page-1 part to create this URL:

http://www.challengeblog.org/2009/05/dont-count-blisters/#comment-11

How can I get this theme to generate the correct URL — or how can I get the URL it *is* generating to work? I don’t see anything about pagination here:

http://codex.wordpress.org/Template_Tags/wp_list_comments