it looks like you no longer have the CSS using the 'div#my_updated_concerts' in your code.
You have to know how CSS works, there are rules of precedence. take teh following HTML from your page
HTML Code:
<div id="my_updated_concerts" class="bfa_widget_area">
<div id="recently_updated_pages-5" class="widget Recently_Updated_Pages">
<div class="widget-title">
<h3>Recently Added Concert Dates 2010</h3>
</div>
<ul>
<li class='page_item page-item-209'><a href='http://www.the80schild.com/80s-artists/pat_benatar/' title='Pat Benatar Concert Tour'>Pat Benatar Concert Tour</a> on Mon - March 1, 2010</li>
<li class='page_item page-item-194'><a href='http://www.the80schild.com/80s-artists/heart/' title='Heart Concert Tour'>Heart Concert Tour</a> on Sun - February 28, 2010</li>
<li class='page_item page-item-196'><a href='http://www.the80schild.com/80s-artists/journey/' title='Journey Concert Tour'>Journey Concert Tour</a> on Sun - February 28, 2010</li>
<li class='page_item page-item-711'><a href='http://www.the80schild.com/80s-artists/the-church-concert-tour/' title='The Church Concert Tour'>The Church Concert Tour</a> on Sun - February 28, 2010</li>
...<snip>...
<li class='page_item page-item-227'><a href='http://www.the80schild.com/80s-artists/yes/' title='Yes Concert Tour'>Yes Concert Tour</a> on Wed - August 19, 2009</li>
</ul>
</div>
</div>
if you code a CSS statement
HTML Code:
div#my_updated_concerts {color: blue;}
and there was no other CSS, the color of all the text in that <div>........</div> would be blue. If however youhad teh following CSS
HTML Code:
div div {color: yellow;}
div#my_updated_concerts {color: blue;}
all the text would be yellow, because the DIV DIV is more specific.
Given that the Atahualpa CSS is about 3200 lines, you can imagine that the general cases have options set and you need to be specific to override them.