Free to wrong pool 2227b8 not 3d5a2aa0 at C:/Perl/lib/XSLoader.pm line -1.

While trying to use the sample code from the CPAN on
Parallel::ForkManager, I get an error "Free to wrong pool 2227b8 not
3d5a2aa0 at C:/Perl/lib/XSLoader.pm line -1."

I have been poking around the internet looking for possible solution.
But to no avail. Not sure if someone already had this fixed ?

I am running Perl v5.8.8 built for MSWin32-x86-multi-thread. Platform
is WinXP SP2.

Below are the codes

  use LWP::Simple;
  use Parallel::ForkManager;

  ...

  @links=(
    ["http://www.foo.bar/rulez.data","rulez_data.txt"],
    ["http://new.host/more_data.doc","more_data.doc"],
    ...
  );

  ...

  # Max 30 processes for parallel download
  my $pm = new Parallel::ForkManager(30);

  foreach my $linkarray (@links) {
    $pm->start and next; # do the fork

    my ($link,$fn) = @$linkarray;
    warn "Cannot get $fn from $link"
      if getstore($link,$fn) != RC_OK;

    $pm->finish; # do the exit in the child process
  }
  $pm->wait_all_children;