xdebug not connecting with client?

Question

The xdebug server doesn't connect to any of the clients on port 9000 ie:Netbeans IDE ,debugclient etc.xdebug is shown in phpinfo output.The above clients keep on waiting for the connection to be established.when ever I try to run a php script from the cli it gives the following warning message:

"PHP Warning: Module 'xdebug' already loaded in Unknown on line 0" The 9000 port has been opened and shows up in the netstat --numeric-port -l command. I have no idea what might have gone wrong.I have checked all the configuration files,everything seems ok. Any help will be appreciated. Section of my configuration files

Linux abc.localdomain 3.1.1-2.fc16.x86_64 #1 SMP Mon Nov 14 15:46:10 UTC 2011 x86_64 
 This program makes use of the Zend Scripting Language Engine:
 Zend Engine v2.3.0, Copyright (c) 1998-2011 Zend Technologies
 with Xdebug v2.1.2, Copyright (c) 2002-2011, by Derick Rethans
[Zend]
zend_extension=/usr/lib64/php/modules/xdebug.so
[XDebug]
xdebug.remote_enable=On
xdebug.remote_autostart=On
xdebug.remote_handler=dbgp
xdebug.remote_host=localhost
xdebug.remote_port=9000
xdebug.remote_mode=req
xdebug.remote_log=/var/log/xdebug.log

php_api no. coincides

Xdebug Simple DBGp client (0.10.0) Copyright 2002-2007 by Derick Rethans. - libedit support: enabled

Waiting for debug server to connect.

Is it black magic!!

Thank You

Answer 1

It was actually Selinux not allowing Httpd to connect to other network resources.

Setting the boolean for httpd solved the problem:

setsebool -P httpd_can_network_connect on

OS Fedora 16-X_64