It's because you're doing something wrong, and without code, no one can tell you what. Anyway, Tie::File is nice

use Tie::File;
{
   tie my @array, 'Tie::File', 'filename' or die "eek $@ $! $/";
   push @array, scalar localtime;
   unshift @array, scalar gmtime;
}

warn "and the file contains $/";
{
    tie my @array, 'Tie::File', 'filename' or die "eek $@ $! $/";
    print $_,$/ for @array;
}
__END__
$$ perl test
and the file contains
Sun Mar 14 01:19:12 2004
Sat Mar 13 17:19:12 2004

$$ perl test
and the file contains
Sun Mar 14 01:19:14 2004
Sun Mar 14 01:19:12 2004
Sat Mar 13 17:19:12 2004
Sat Mar 13 17:19:14 2004

$$ perl test
and the file contains
Sun Mar 14 01:19:15 2004
Sun Mar 14 01:19:14 2004
Sun Mar 14 01:19:12 2004
Sat Mar 13 17:19:12 2004
Sat Mar 13 17:19:14 2004
Sat Mar 13 17:19:15 2004
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