It thinks so, but I'm not using Unicode anywhere. Here's the whole script.

#!/usr/bin/perl
#
#
use strict;
use warnings;

my $file = "input.txt";

open ( FILE, $file ) || die "Can't open $file $!";

while ( <FILE> ) {
        chomp;
        if ( $_ = /\d+\*/ ) {
                print "$_\n";
        }
}
[download]

As for the \d{1,} -- I was actually going to put an upper limit on it at one point, so just wrote it that way. For now the + will do though.

Update - I tried on another machine, and it works, so it's definitely machine related. Both machines are running Perl v5.8.0 Cheers