Please try using this CVS snapshot:

  http://snaps.php.net/php5.2-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php5.2-win32-latest.zip

No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".

So far i can confirm this improper behaviour with using PDO and stored procedure calls. I've just updated my PHP version to the latest 5.2.1 release and PDO still won't allow multiple stored procedure calls even i've closed the cursor with the available method.

// this won't work more than once
$stmt = $db->prepare("CALL spListUsers()");

$stmt->execute();

$data = $stmt->fetchAll(PDO::FETCH_OBJ);

$stmt->closeCursor();

print_r($data);

// while this instead will work fine, even more than once
$stmt = $db->prepare("SELECT * FROM users");

$stmt->execute();

$data = $stmt->fetchAll(PDO::FETCH_OBJ);

$stmt->closeCursor();

print_r($data);

I assuming that this kind of bug is not solved in PHP 5.2.1 so far.

I have a very similar problem:

<?php

	$dsn  = 'oci:dbname=//10.1.2.3/test';
	$user = 'username';
	$pass = 'password';

	$db = new PDO($dsn, $user, $pass);
	
	$st = $db->prepare("SELECT 123 FROM DUAL");

	// first try
	$st->execute();
	$ret = $st->fetch(PDO::FETCH_NUM);
	$st->closeCursor();
	var_dump($ret);
	if($ret[0] != NULL)print("ok1\n");
	if($ret[0] == 123)print("ok2\n");
	
	// second try - same code
	$st->execute();
	$ret = $st->fetch(PDO::FETCH_NUM);
	$st->closeCursor();
	var_dump($ret);
	if($ret[0] != NULL)print("ok3\n");
	if($ret[0] == 123)print("ok4\n");
		
	print("done\n");
	
?>

The output is:
-----------------------------------
array(1) {
  [0]=>
  string(3) "123"
}
ok1
ok2
array(1) {
  [0]=>
  NULL
}
done
-----------------------------------
The code works as expected if the closeCursor() call is removed.
The closeCursor documentation states that it does something equivalent
to:

do {
    while ($stmt->fetch())
        ;
    if (!$stmt->nextRowset())
        break;
} while (true);

This does not work, because nextRowset() is not implemented. 
But "while($stmt->fetch());" alone seems to work as a workaround for closeCursor() - but it looks like that neither closeCursor nor the workaround is necessary, as it works without them.

This was tested on PHP 5.2.6-1 with Suhosin-Patch 0.9.6.2 (cli) running on Debian Linux.