Description:
------------
Hello,

Executing 2 multi-statement queries gives you the following error : 
2013 - Lost connection to MySQL server during query

I reproduced this error using 5.1.0RC3 and 5.1.2.

My MySQL version is 4.1.12, and I have the right MySQL / PDO connector.

Thanks,

Antoine

Reproduce code:
---------------
<?php
$dbh = new PDO("mysql:dbname=karibou;host=localhost", "user", "password");
try {
  	$qry  = "DELETE FROM addressbook_address WHERE profile_id=2 ; \n";
	$qry .= "DELETE FROM addressbook_phone WHERE profile_id=2 ; \n";
	
	//No error
	$dbh->exec($qry);
	//The folowing line displays : Array ( [0] => 00000 )
	print_r($dbh->errorInfo());

	//This second exec statement produces the error : "Lost connection to MySQL server during query"
	$dbh->exec($qry);
	//The following line displays : Array ( [0] => HY000 [1] => 2013 [2] => Lost connection to MySQL server during query )
   print_r($dbh->errorInfo());
   
} catch (PDOException $e) {
   print $e->getMessage();
   die();
}

?>

Expected result:
----------------
None of the exec should return an error.

Actual result:
--------------
The second exec returns a 2013 error (Lost connection...).

Array ( [0] => HY000 [1] => 2013 [2] => Lost connection to MySQL server during query )