Несовместимость rewrite с ЧПУ joomla

Не могу сделать рабочую переадресацию с поддомена по инструкции Питерхоста

Цитата

RewriteEngine On

RewriteCond %{HTTP_HOST} (www\.)?forum\.mydomain\.ru$

RewriteCond %{REQUEST_URI} !^(/)?forum/

RewriteRule ^(.*)$ forum/$1

После того как я вставляю этот код в конец .htaccess ничего не меняется.

Если очистить .htaccess то переадресация работает, но тогда не работает стандартный ЧПУ joomla.

Не могу добиться совместимости... Прошу помощи у знающих людей. Заранее спасибо.

Текст .htaccess:

php_value display_errors 1

php_value error_reporting 1

<IfModule mod_headers.c>

Header set Cache-Control "no-store, no-cache, max-age=0"

</IfModule>

<IfModule mod_expires.c>

ExpiresActive On

ExpiresDefault "now"

</IfModule>

##

# @version $Id: htaccess.txt 14401 2010-01-26 14:10:00Z louis $

# @package Joomla

# @copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.

# @license http://www.gnu.org/copyleft/gpl.html GNU/GPL

# Joomla! is Free Software

##

################################################## ###

# READ THIS COMPLETELY IF YOU CHOOSE TO USE THIS FILE

#

# The line just below this section: 'Options +FollowSymLinks' may cause problems

# with some server configurations. It is required for use of mod_rewrite, but may already

# be set by your server administrator in a way that dissallows changing it in

# your .htaccess file. If using it causes your server to error out, comment it out (add # to

# beginning of line), reload your site in your browser and test your sef url's. If they work,

# it has been set by your server administrator and you do not need it set here.

#

################################################## ###

## Can be commented out if causes errors, see notes above.

Options +FollowSymLinks

#

# mod_rewrite in use

RewriteEngine On

########## Begin - Rewrite rules to block out some common exploits

## If you experience problems on your site block out the operations listed below

## This attempts to block the most common type of exploit `attempts` to Joomla!

#

## Deny access to extension xml files (uncomment out to activate)

#<Files ~ "\.xml$">

#Order allow,deny

#Deny from all

#Satisfy all

#</Files>

## End of deny access to extension xml files

RewriteCond %{ENV:REDIRECT_STATUS} ^$

RewriteCond %{QUERY_STRING} mosConfig_[a-zA-Z_]{1,21}(=|\%3D) [OR]

# Block out any script trying to base64_encode crap to send via URL

RewriteCond %{QUERY_STRING} base64_encode.*\(.*\) [OR]

# Block out any script that includes a <script> tag in URL

RewriteCond %{QUERY_STRING} (\<|%3C).*script.*(\>|%3E) [NC,OR]

# Block out any script trying to set a PHP GLOBALS variable via URL

RewriteCond %{QUERY_STRING} GLOBALS(=|\[|\%[0-9A-Z]{0,2}) [OR]

# Block out any script trying to modify a _REQUEST variable via URL

RewriteCond %{QUERY_STRING} _REQUEST(=|\[|\%[0-9A-Z]{0,2})

# Send all blocked request to homepage with 403 Forbidden error!

RewriteRule ^(.*)$ index.php [F,L]

#

########## End - Rewrite rules to block out some common exploits

# Uncomment following line if your webserver's URL

# is not directly related to physical file paths.

# Update Your Joomla! Directory (just / for root)

# RewriteBase /

########## Begin - Joomla! core SEF Section

#

RewriteCond %{REQUEST_FILENAME} !-f

RewriteCond %{REQUEST_FILENAME} !-d

RewriteCond %{REQUEST_URI} !^/index.php

RewriteCond %{REQUEST_URI} (/|\.php|\.html|\.htm|\.feed|\.pdf|\.raw|/[^.]*)$ [NC]

RewriteRule (.*) index.php

RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L]

RewriteCond %{HTTP_HOST} (www\.)?tambov\.snabco\.ru$

RewriteCond %{REQUEST_URI} !^(/)?tambov/

RewriteRule ^(.*)$ tambov/$1