Ummm...I just checked the source of the one that's already on the site vs what you have. Here's what I see. First, the official version: 
# Search file for cpan.org
#
# Creation:  2000 by Binary Runner  <binary_runner@rocketmail.com>
# Updated: 2003-02-26 by Paul Millar

<SEARCH
    version = "7.1"
    name = "cpan.org"
    method = "get"
    action = "http://search.cpan.org/search"
    description = "CPAN Search"
    searchform = "http://search.cpan.org/"

>

<input name="query" user>
<input name="mode"  value="all">
<input name="n" value="20">
<input name="sourceid" value="mozilla-search">

<interpret
    browserResultType = "result"
    resultListStart = "<br><div class=t4>"
    resultListEnd = "<center> <b>1</b> &middot;"
    resultItemStart = "  <p><a "
    resultItemEnd = "<br /><small>"
>

</search>

<BROWSER
      update="http://mycroft.mozdev.org/plugins/cpan.src"
      updateIcon="http://mycroft.mozdev.org/plugins/cpan.gif"
      updateCheckDays="3"
>

[download]
Next, the one I downloaded from your site: 
<search
 version="7.1"
 name="search CPAN.org"
 description="search CPAN.org"
 action="http://search.cpan.org/search"
 searchForm="http://search.cpan.org"
 method="GET" >

<input name="sourceid" value="Mozilla-search">
<input name="query" user>

<interpret
 resultListStart="<!-- RESULT LIST START -->"
 resultListEnd="<!-- RESULT LIST END -->"
 resultItemStart="<!-- RESULT ITEM START -->"
 resultItemEnd="<!-- RESULT ITEM END -->"
>
</search>

<browser
 update="http://mycroft.mozdev.org/plugins/cpan.src"
 updateIcon="http://mycroft.mozdev.org/plugins/cpan.gif"
 updateCheckDays="3"
>

[download]
Now, I'm not an expert at Mozilla search plugins, but those look awefully similar...down to the version number even.

thor

Feel the white light, the light within
Be your own disciple, fan the sparks of will
For all of us waiting, your kingdom will come

In reply to Re^5: mozilla firefox search.cpan.org plugin by thor
in thread mozilla firefox search.cpan.org plugin by metaperl

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