PQconnectdb issue in DBI, using OSX 10.6, Perl 5.10, PostgreSQL 8.3

dwhite20899 has asked for the wisdom of the Perl Monks concerning the following question:

I was running Perl 5.8 on OSX 10.5 with PostgreSQL 8.3.7.
I upgraded to OSX 10.6, which brought Perl 5.10 with it.
I made sure the modules I need were installed in 5.10.
I installed DBD-Pg-2.15.1 and DBI-1.609.

When I run this code

#!/usr/bin/perl -w

use strict;
use DBI;
use DBD::Pg;

use vars qw( @ImagesList );



  my $dbh = DBI->connect("dbi:Pg:dbname='wonkaDB';host='192.168.1.1'",
+ 'willy', 'pwd0ompa') ;
  if ( !$dbh ) {
    die "ERROR: Cannot connect to database.\n\n";
  }
    print "connected to database.\n";

      my $sql_cmd = "select image from media_state where attempted IS 
+NULL limit 7 ";

      my $sth = $dbh->prepare($sql_cmd);
      $sth->execute() or die "Execute for media_state has failed.\n";

      if ($sth->rows > 0 ) {
        my @fet_row = $sth->fetchrow_array;
        while ( @fet_row = $sth->fetchrow_array) {

             push(@ImagesList, $fet_row[0]);
        }
      } else {
         print("No images found in media_state table\n");
      }

  $dbh->disconnect();

print join("\n",@ImagesList);

exit;
[download]

I get this error

dyld: lazy symbol binding failed: Symbol not found: _PQconnectdb
  Referenced from: /Library/Perl/5.10.0/darwin-thread-multi-2level/aut
+o/DBD/Pg/Pg.bundle
  Expected in: flat namespace

dyld: Symbol not found: _PQconnectdb
  Referenced from: /Library/Perl/5.10.0/darwin-thread-multi-2level/aut
+o/DBD/Pg/Pg.bundle
  Expected in: flat namespace

Trace/BPT trap
[download]

I searched around, tried some environment variable suggestions, reinstalled Postgres, uninstalled and reinstalled modules yet still get that PQconnectdb error.

What am I missing, here? This isn't rocket surgery.

Update: I'm going to go wander off and see what's in 32 and 64 bit territory. Will report back later...

Update (later): I uninstalled PostgreSQL, uninstalled the DBD and DBI modules; then installed PostgreSQL 8.3.7 from source again (it recognized 64-bit) and DBI and DBD::Pg, and everything works. Looking at the logs, I don't see anything different from Friday's installs, but it's happy now. (I'm not happy, but I guess I don't count.)