if ($row['forum_last_post_time'] > $forum_rows[$parent_id]['forum_last_post_time'])
{
	$forum_rows[$parent_id]['forum_last_post_id'] = $row['forum_last_post_id'];
	$forum_rows[$parent_id]['forum_last_post_subject'] = $row['forum_last_post_subject'];
	$forum_rows[$parent_id]['forum_last_post_time'] = $row['forum_last_post_time'];
	$forum_rows[$parent_id]['forum_last_poster_id'] = $last_poster_id;
	$forum_rows[$parent_id]['forum_last_poster_name'] = $row['forum_last_poster_name'];
	$forum_rows[$parent_id]['forum_last_poster_colour'] = $row['forum_last_poster_colour'];
	$forum_rows[$parent_id]['forum_id_last_post'] = $row['forum_id'];
}

-- Change above to below

if ($row['forum_last_post_time'] > $forum_rows[$parent_id]['forum_last_post_time'])
{
	$forum_rows[$parent_id]['forum_last_post_id'] = $last_post_id;
	$forum_rows[$parent_id]['forum_last_post_subject'] = $last_post_subject;
	$forum_rows[$parent_id]['forum_last_post_time'] = $last_post_time;
	$forum_rows[$parent_id]['forum_last_poster_id'] = $last_poster_id;
	$forum_rows[$parent_id]['forum_last_poster_name'] = $last_poster_name;
	$forum_rows[$parent_id]['forum_last_poster_colour'] = $last_poster_colour;
	$forum_rows[$parent_id]['forum_id_last_post'] = $forum_id;
}