problem with PEAR config-set command and preferred_mirror option

Hi, While I wanted to test my latest modification on PEAR_PackageUpdate (support mirror for REST 1.0 protocol) I run in trouble with PEAR config-set command. Here is my *pear.ini* content : C:\wamp\php>pear -c pear.ini config-show CONFIGURATION (CHANNEL PEAR.PHP.NET): =====================================

Auto-discover new Channels     auto_discover    <not set>
Default Channel                default_channel  pear.php.net
HTTP Proxy Server Address      http_proxy       <not set>
PEAR server [DEPRECATED]       master_server    pear.php.net
Default Channel Mirror         preferred_mirror pear.php.net
Remote Configuration File      remote_config    <not set>
PEAR executables directory     bin_dir          C:\wamp\php
PEAR documentation directory   doc_dir          C:\wamp\php\pear\docs
PHP extension directory        ext_dir          c:\wamp\php\ext\
PEAR directory                 php_dir          C:\wamp\php\pear
PEAR Installer cache directory cache_dir        c:\wamp\php\pear\cache
PEAR data directory            data_dir         C:\wamp\php\pear\data
PEAR Installer download        download_dir     c:\wamp\tmp

directory

PHP CLI/CGI binary             php_bin          C:\wamp\php\php.exe
php.ini location               php_ini          <not set>
PEAR Installer temp directory  temp_dir         c:\wamp\tmp
PEAR test directory            test_dir         C:\wamp\php\pear\tests
Cache TimeToLive               cache_ttl        3600
Preferred Package State        preferred_state  stable
Unix file mask                 umask            0
Debug Log Level                verbose          1
PEAR password (for             password         <not set>

maintainers)

Signature Handling Program     sig_bin          c:\gnupg\gpg.exe
Signature Key Directory        sig_keydir       C:\WINDOWS\pearkeys
Signature Key Id               sig_keyid        <not set>
Package Signature Type         sig_type         gpg
PEAR username (for             username         <not set>

maintainers)

User Configuration File        Filename         pear.ini
System Configuration File      Filename         C:\WINDOWS\pearsys.ini

I want to change "Default Channel Mirror" (preferred_mirror) from 'pear.php.net' to europe mirror as notified at http://pear.php.net/mirrors.php So I did : C:\wamp\php>pear -c pear.ini config-set preferred_mirror de.pear.php.net And i got this answer : config-set (preferred_mirror, de.pear.php.net, user) failed, channel pear.php.net What I missed ? Help are welcome ! Last but not least, my platform info : C:\wamp\php>pear -V PEAR Version: 1.6.1 PHP Version: 5.2.3 regards Laurent