Xdebug 2.2.1 installed with PHP 5.4.3 / Apache 2.2.22.

Unable to connect using the following script. No errors - it just sits there.
<?php
$address = '127.0.0.1';
$port = 9000;
$sock = socket_create(AF_INET, SOCK_STREAM, 0);
socket_bind($sock, $address, $port) or die('Unable to bind');
socket_listen($sock);
$client = socket_accept($sock);
echo "connection established: $client";
socket_close($client);
socket_close($sock);
?>

Unable to connect via Netbeans.

netstat shows port 9000 not used.

phpinfo() shows xdebug installed OK with correct options
e.g.
xdebug support enabled
This program makes use of the Zend Scripting Language Engine:
Zend Engine v2.4.0, Copyright (c) 1998-2012 Zend Technologies
with Xdebug v2.2.1, Copyright (c) 2002-2012, by Derick Rethans
Version 2.2.1
IDE Key DESKTOP$......etc.etc...

No xdebug log file created.

No apache errors on startup in logs.

Apache php.ini is
zend_extension = "c:/wamp/bin/php/php5.4.3/zend_ext/php_xdebug-2.2.1-5.4-vc9.dll"

[xdebug]
xdebug.remote_enable = on
xdebug.remote_host=localhost
xdebug.remote_port=9000
xdebug.remote_handler=dbgp
xdebug.remote_log="c:/wamp/logs/xdebug.log"
xdebug.profiler_enable = on
xdebug.profiler_enable_trigger = off
xdebug.profiler_output_name = cachegrind.out.%t.%p
xdebug.profiler_output_dir = "c:/wamp/tmp"

Batch PHP ini is

zend_extension = "c:/wamp/bin/php/php5.4.3/zend_ext/php_xdebug-2.2.1-5.4-vc9.dll"

[xdebug]
xdebug.remote_enable = on
xdebug.remote_host=localhost
xdebug.remote_port=9000
xdebug.remote_handler=dbgp
xdebug.remote_log="c:/wamp/logs/xdebug_batch.log"
xdebug.profiler_enable = on
xdebug.profiler_enable_trigger = off
xdebug.profiler_output_name = cachegrind.out.%t.%p
xdebug.profiler_output_dir = "c:/wamp/tmp"

Any ideas???