help with libxml

hi - i'm pulling my hair out. the find method simply won't work for
me.

here's my xml doc:

<top>
<first>
<second>
</second>
</first>
</top>

that's it. now after parsing, i do

doc.find('/top/first')

and i get a result with size 0. i've tried everything. is there a
trick to using libxml that i'm missing?

thanks, for any help,
dino

Loading development environment (Rails 2.3.3)
require 'xml'

require 'xml'

=> []

doc = XML::Document.file("public/my.xml")

=> <?xml version="1.0" encoding="UTF-8"?>
<top>
  <first>
    <second>
    </second>
  </first>
</top>

nodes = doc.find('/top/first')

=> #<LibXML::XML::XPath::Object:0x282c3bc>

nodes.each do |node|

?> puts node

end

<first>
    <second>
    </second>
  </first>
=> #<LibXML::XML::XPath::Object:0x282c3bc>