heres the complete code with the file for my input:

#!/usr/bin/perl

use warnings;
use strict;
use diagnostics;
use WWW::LEO;
use Data::Dumper;


open(INFO,   "<  /home/metalfan/todo/dictionaries/Vokabeln\ -\ absolut
+ion\ gap.csv.test") || die("can't open datafile: $!");
#my @file=<INFO>;


#for my $entry (@file)
foreach my $entry (<INFO>)
#for my $entry ($file[10]..$file[15])
{
    my $n=0;
    if ($entry =~ m/"(.+)",\s/x)
    {
        if ($entry =~ m/Baggage/)
        {
            exit;
        }
        my $vokabel=$1;
        #print "$1\n";
        my $leo = WWW::LEO->new;
        #$leo->query("@ARGV");
        $leo->query("$vokabel");
        if ($leo->num_results)
        {
            my $i;
            foreach my $resultpair (@{$leo->en_de})
            {
                printf "%3d: %-40s %s\n", ++$i, @$resultpair;
            }
        }
        else
        {
            print "Sorry, your query for ’%s’gave no results.\n", $leo
+->query;
        }

    }
}
[download]

the input file:
http://rapidshare.de/files/10146384/Vokabeln_-_absolution_gap.csv.test.html

it's still "crashing". mostly every third run didnt succeed...
what could that be?