The problem comes from you using a <p> tag around the first set of links. In Internet Explorer the margin-bottom of this equal to 1 line space, but not in firefox. You need to resolve this problem by puting a <br> after curriculum in the same way as you have in the other lists.
Where you have
<p class="paragrafo1"><span class="style1"><span class="style2">Antonio Neto - Bauru-SP, Brasil</span><br>
55 14 3227-7621<br>
55 14 9133-7201<br>
<a href="mailto:neto@deusmoleque.com">neto@deusmoleque.com</a><br>
</span><a href="http://www.deusmoleque.com" target="_blank">curriculum [+]</a></p>
try
<span class="paragrafo1"><span class="style1"><span class="style2">Antonio Neto - Bauru-SP, Brasil</span><br>
55 14 3227-7621<br>
55 14 9133-7201<br>
<a href="mailto:neto@deusmoleque.com">neto@deusmoleque.com</a><br>
</span><a href="http://www.deusmoleque.com" target="_blank">curriculum [+]</a><br></p>
With that said, I recommend trying to create the website using XHTML Transitional/XHTML Strict.
Hope that helps :thumb: