$ub->cookie_jar = $ua->cookie_jar;

##</code><code>##


use HTTP::Cookies;
..
$ua = LWP::UserAgent->new;
$ua->agent($MOZILLA);
$ua->cookie_jar(new HTTP::Cookies);
$res = $ua->request(GET $url); #the $ua->cookie_jar is set hereafter
$post = &fillForm(\$res, \%FW, $form); # fillout form

# Creating a new UserAgent $ub
$ub = LWP::UserAgent->new;
$ub->agent($MOZILLA);
$ub->cookie_jar(new HTTP::Cookies);
$ub->cookie_jar = $ua->cookie_jar; #crash
# now this cookie of $ub has to be the same as of $ua
# I just don't get it and
# I don't want to save and load a file due to permissions

$res = $ub->request($post);
$post = &fillForm(\$res,\%FW,'msgO',$nSMS); # fillout next Form

# create 3rd UserAgent $uc
$uc = LWP::UserAgent->new;
$uc->agent($MOZILLA);
$uc->cookie_jar(new HTTP::Cookies);
$uc->cookie_jar = $ub->cookie_jar; #crash

# Again this cookie must be the same as
# the 2 others before

$res = $uc->request($post);
...