Repeating post on Wordpress theme and Thumbnail not Appearing - php

Question

I need some help trying to figure this out, but currently, when I post a post on the Manhusay Theme on my Wordpress Site, it repeats it 3 times and replaces the other posts. The site is www.pcrmj.com. Here is the script that is currently in there if anyone has any suggestions or ways of correcting this.
<?php get_header(); ?>
<div id="content">
<div class="postgroup">
<?php for($i=1;$i<4;$i++) : ?>
<?php
$latest = get_option('mahusay_category_' . $i);
$latcat = (empty($latest)) ? 1 : get_category_by_slug($latest);
query_posts('showposts=1&cat='.$latcat->cat_ID);
?>
<?php while (have_posts()) : the_post(); ?>
<div class="post indexpost" id="post-<?php the_ID(); ?>">
<?php
$customfields = get_post_custom();
$scrp = get_bloginfo('wpurl') . '/tt-scripts/timthumb.php?';
if (empty($customfields['paddimage'][0])) {
$imgpath = $scrp . 'src=' . get_bloginfo('wpurl') . '/wp-content/themes/mahusay/images/thumbnail.png' . '&w=125&h=125&zc=1';
} else {
$imgpath = $scrp . 'src=' . get_bloginfo('wpurl') . $customfields['paddimage'][0] . '&w=125&h=125&zc=1';
}
?>
<div class="title">
<p>
<span class="date"><?php the_time('F j, Y'); ?></span>
<span class="nodisplay">|</span>
<span class="comments"><?php comments_popup_link('No Comments', '1 Comment', '% Comments'); ?></span>
<span class="nodisplay">|</span>
<span class="categories"><?php echo $latcat->cat_name; ?></span>
</p>
</div>
<img class="header" src="<?php echo $imgpath; ?>" alt="<?php the_title(); ?>" />
<div class="entry">
<h2 class="title"><?php the_title(); ?></h2>
<?php themefunction_content(400,'');?>
</div>
</div>
<?php endwhile; ?>
<?php endfor; ?>
</div>
<div class="extra">
<div class="box box-popular">
<h2>Popular</h2>
<div class="interior">
<ul>
<?php akpc_most_popular(5,'<li><span>','</span></li>'); ?>
</ul>
</div>
</div>
<div class="box box-recent">
<h2>Recent</h2>
<div class="interior">
<?php themefunction_recent_post(); ?>
</div>
</div>
<div class="clearer"></div>
</div>
</div>
<?php get_sidebar(); ?>
<?php get_footer(); ?>
Also, Thumbnail.png is not appearing. If anybody can help, that would be great.

Answer 1

First thing to do is after the following line...
<?php endfor; ?>
Add...
<?php wp_reset_query(); ?>
This resets the query back to what the query for that page should be and will stop any query_posts functions effecting other loops on the page.