Description:
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The parameter int $time doesnt work if different from 0

Memcached reports error 38 with message: INVALID ARGUMENTS

Here are the versions I am running
libmemcached-1.0.7_1                =   up-to-date with port
memcached-1.4.17                    =   up-to-date with port
pecl-memcached-2.1.0                =   up-to-date with port

Test script:
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$m = new Memcached();
$m->addServer('127.0.0.1', 11211);

$m->set('test','Hello');
echo $m->get('test'); //Should output "Hello", this is working fine
$m->delete('test',1);
echo $m->get('test'); //Shouldn't output anything since the value should have been deleted. This is not working (ie, outputs, Hello)
$m->delete('test',0);
echo $m->get('test'); //Shouldn't output anything since the value should have been deleted. This is working since the parameter is not=0

Expected result:
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Hello

Actual result:
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HelloHello