Thanks, Think you've got it !
I'd the same problem without the Net::Ifconfig::Wrapper if i use :

sub getifip {
    my $ip = '0.0.0.0';
    open(README,"/sbin/ifconfig $_[0] 2>&1 |");
    while (<README>) { 
        if ( /ad\w*:(\d+\.\d+\.\d+\.\d+)\s.*/ ) {$ip=$1}
    }
    close(README);
    #&slog("$_[0] has ip $ip","getifip");
    return $ip;
}
[download]

i had the same problem in a program that forks. So i think bug is definitely in the Schedule::Cron module
I'll try your workaround.
Thanks a lot.
Regards
Beav