Description:
------------
in my php 5.0.3 and php 5.0.4 servers curl did not write 
to the cookieJar file even though it is writable and 
there are cookies that were received

phpinfo for working server is @ http://
edman007.optikhosting.com/phpinfo.php

phpinfo for php server that doesn't work is @ http://
server.antiwindows.gotdns.com/phpinfo.php

Reproduce code:
---------------
<?php
header('Content-type: text/plain');
$file = tempnam('/tmp', 'php_bug_test');//should be writable
//a check
echo is_writable($file)?'This File Is Writable':'This File Is not Writable';
echo "\n";
//and again
echo system('ls -lah '.$file);
echo "\n";
$ch = curl_init('http://www.yahoo.com/');///this site will give me a cookie
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_COOKIEJAR, $file);
curl_exec($ch);
curl_close($ch);
echo file_get_contents($file);
unlink($file);
?>

Expected result:
----------------
(i got this from a php 4.3.11 server)

This File Is Writable
-rw-------    1 nobody   nobody          0 Jun 25 15:15 
/tmp/php_bug_testKzXWcK
-rw-------    1 nobody   nobody          0 Jun 25 15:15 
/tmp/php_bug_testKzXWcK
# Netscape HTTP Cookie File
# http://www.netscape.com/newsref/std/cookie_spec.html
# This file was generated by libcurl! Edit at your own 
risk.

.www.yahoo.com	TRUE	/	FALSE	1149188400	FPB
	311up3uh111brer0


Actual result:
--------------
(i got this from my php 5.0.4 server)

This File Is Writable
-rw-------  1 nobody nobody 0 2005-06-25 16:15 /tmp/
php_bug_testYspF2w
-rw-------  1 nobody nobody 0 2005-06-25 16:15 /tmp/
php_bug_testYspF2w