Here is the script that will produce the bug.

Here is an exemple of final message
It doesn't happen always on the same number,
but it always happened to me before the end of this array 
of URL.

***********************************
33 : www.52w.net curl_exec http://www.52w.net
curl_error
Connect failed
34 : www.52www.net curl_exec http://www.52www.net
*** malloc[13148]: error: Can't allocate region
mach_port_type() failed (ipc/mig) wrong reply message ID
task_get_bootstrap_port() failed (ipc/mig) wrong reply 
message ID
Abort
[localhost:~/Sites] imac%
***********************************

I'm still on Macosx 10.1.5
curl 7.10-pre2 (powerpc-apple-darwin5.5) libcurl/7.10-pre2 
zlib/1.1.3

#!/usr/bin/php -q
<?php
error_reporting(E_ALL);

$i = 0;
$r = 
array('germany.gs','gifts.gs','girl.gs','gisler.gs','gs-
www.gs','www.bank.cn.gs','banks.gs','www.4-w.net','www.411n
ow.net','www.44w.
net','www.4989now.net','www.4all2know.net','www.4anewvw.net
','www.4ashow.net'
,'www.4bizlaw.net','www.4dw.net','www.4epw.net','www.4fw.ne
t','www.4gw.net'
,'www.4healthnow.net','www.4hesajollygoodfellow.net','www.4
law.net','www.4moneynow.
net','www.4payperview.net','www.4pornnow.net','www.4review.
net','www.4shaw.
net','www.4sw.net','www.4u2know.net','www.4ww.net','www.4ww
w.net','www.501c3law.
net','www.50thglasgow.net','www.52w.net','www.52www.net','w
ww.55w.net','www.
56w.net','www.5i5w.net','www.5law.net','www.5starview.net',
'www.62w.net','www.
650-blew.net','www.650blew.net','www.66w.net','www.77w.net'
,'www.7law.net'
,'www.7now.net','www.800-baby-
law.net','www.800-babylaw.net','www.800-call-now.net');



foreach($r as $site){
  print "$i : $site ";
  curl('http://'.$site);
  print " \n";
  $i++;
}

function curl($site){
  $ch = curl_init ($site);

  curl_setopt ($ch, CURLOPT_RETURNTRANSFER,1);
  curl_setopt ($ch, CURLOPT_HEADER, 1);
  curl_setopt ($ch, CURLOPT_NOBODY, 1);
  curl_setopt ($ch, CURLOPT_TIMEOUT, 10);


print "curl_exec $site\n";
 $retour = curl_exec ($ch);
print "curl_error\n";
print curl_error($ch);
curl_close ($ch);


return $retour;
}


?>