Description:
------------
I'm not able to use more closures on single script. Closures - assigned to variable or used as anonymous are null, instead of instance of Closure class.

Also it is really curious, sometimes it works, if there is more code before closure creation.

Fedora 12: 2.6.32.12-115.fc12.x86_64

Test script:
---------------
// * * * * * * * * * * closure 1
echo 'closure 1';
var_dump(function($arg1) {
	return intval($arg1) * 2;
});

// * * * * * * * * * * closure 2
echo 'closure 2';
$c2 = function() {
	echo time();		
};
var_dump($c2);

// * * * * * * * * * * closure 3
echo 'closure 3';
var_dump(function() {
	return sha1(strval(rand()));
});

Expected result:
----------------
closure 1

object(Closure)[1]

closure 2

object(Closure)[2]

closure 3

object(Closure)[3]


Actual result:
--------------
closure 1

null

closure 2

null

closure 3

object(Closure)[1]