I edited the query.php in the wp-includes folder. I looked for the place where the variable is used:

if ( (isset($q['posts_per_archive_page']) && $q['posts_per_archive_page'] != 0) && ($this->is_archive || $this->is_search) )

…

and inserted the following line before that:

$q['posts_per_archive_page'] = 10;

Eh eh. This is really ugly this way, but works. Now I have 10 entries listed for each query, while the posts per pages is still 2 or whatever I set in the admin interface.

It says all that I need to do is to add the following to the end of the code that shows a post:

<a href=”<?php trackback_url(true); ?>”>Trackback This Post</a>

It mentions single.php as the possible source that I should modify. OK. I checked and found single.php in Firebug. I modified it, but nothing happened. I also found there is already the following code in single.php:

<?php } elseif (!(‘open’ == $post-> comment_status) && (‘open’ == $post->ping_status)) {
// Only Pings are Open ?>
Responses are currently closed, but you can <a href=”<?php trackback_url(); ?> ” rel=”trackback”>trackback</a> from your own site.

<?php } etc.

OK. It seems that it is not the single.php that actually shows my post. I quickly checked the firebug sources and found index.php in the same directory where single.php was. I tried to modify it and BINGO! It is the one. So I added the following:

<?php if (‘open’ == $post->ping_status)
{?>
You can <a href=”<?php trackback_url(); ?> ” rel=”trackback”>trackback</a> from your  site.<br/><br/>
<?php } ?>

As you can see it is similar to the code I have found in single.php. I just removed the comment status checking and modified the text a bit. It works fine.