mod_perl newbie gotcha

Looking for help from anyone with mod_perl experience - I have been
caught by a classic newbie gotcha... I think.

Running Activestate Perl v5.8.8 for MSWin32, Apache 2.0 for Win32

I believe I have correctly installed mod_perl as $ENV{'MOD_PERL'}
correctly reports the version "mod_perl/2.0.3"

Two simple example CGI scripts -

*The first sends the contents and name of textfield to the second.
*The second script should then print the value of the textfield to
the screen.

The problem is that after the first successful send/receive, all
subsequent executions contain the same initial data: the parameters
never get reset with 'newer' data.

I understand that mod_perl is pretty fussy about closing down
assignments and undefining variables, working with 'strict' and
avoiding Globals.

I would appreciate anyone pointing out the (hopefully) obvious
mistake in my code below - or any guidance at all.

Cheers
NJH

pass_from.cgi
------
#!c:/perl/bin/perl.exe

use warnings;
use strict;
use CGI;
use CGI::Carp qw(fatalsToBrowser);
use DBI;

my $q = new CGI;
print $q->header, $q->start_html(-title=>'Pass From'),
"mod_perl - $ENV{'MOD_PERL'}<p>",
$q->start_multipart_form(-action=>"pass_to.cgi"),
$q->textfield(-name=>'id', -size=>10),
$q->submit(),
$q->end_form();

$q->delete('id');

print $q->end_html;
exit();


pass_to.cgi
------
#!c:/perl/bin/perl.exe

use warnings;
use strict;
use CGI;
use CGI::Carp qw(fatalsToBrowser);
use DBI;

my $q = new CGI;
print $q->header, $q->start_html(-title=>'Pass To'),
"mod_perl - $ENV{'MOD_PERL'}<p>";

foreach my $val($q->param()){print "$val: ",$q->param($val);}

print "<p><a href='pass_from.cgi'>Return</a>";

$q->delete('id');

print $q->end_html;
exit();