Suffisso URL con Joomla

Ciao a tutti.
qualcuno ha già affrontato questo problema come ho postato in oggetto?

In sitensi attivando la funziona Suffisso URL di Joomla le pagine scompaiono o meglio non sono raggiungibili.

il mio .htaccess con Suffisso Url disattivato
-------------------------------------------------------------------------

# # av:php5-engine
AddHandler av-php53 .php

# av:AntiHotlink
RewriteEngine on
RewriteBase /
RewriteCond %{REQUEST_URI} \.(gif|jpe?g|png)$ [NC]
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://([a-z0-9\-\.]*)sitoweb\.altervista\.org
RewriteCond %{REQUEST_URI} !^\/_altervista_ht\/
RewriteCond %{HTTP_REFERER} !^http://([a-z0-9\-\.]+)google\.
RewriteRule .*$ http://hl.altervista.org/split.php?http://%{HTTP_HOST}%{REQUEST_URI} [R,L]
# AntiHotlink

# # av:Toolbar
SetEnv AV_TOOLBAR 0

-------------------------------------------------------------------------

[RedWebSite]

ciao, quello non è l'htaccess originale di joomla, comunque per far funzionare correttamente il sef di joomla puoi usare questo che è quello originale di joomla 2.5.9 gia ottimizzato per altervista con il php5.3 attivo devi solo inserire il codice della toolbar

##
# @package		Joomla
# @copyright	Copyright (C) 2005 - 2012 Open Source Matters. All rights reserved.
# @license		GNU General Public License version 2 or later; see LICENSE.txt
##

##
# 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!
#
# Block out any script trying to base64_encode data within the URL.
RewriteCond %{QUERY_STRING} base64_encode[^(]*\([^)]*\) [OR]
# Block out any script that includes a <script> tag in URL.
RewriteCond %{QUERY_STRING} (<|%3C)([^s]*s)+cript.*(>|%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})
# Return 403 Forbidden header and show the content of the root homepage
RewriteRule .* index.php [F]
#
## End - Rewrite rules to block out some common exploits.

## Begin - Custom redirects
#
# If you need to redirect some pages, or set a canonical non-www to
# www redirect (or vice versa), place that code here. Ensure those
# redirects use the correct RewriteRule syntax and the [R=301,L] flags.
#
## End - Custom redirects

##
# 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.
#
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
#
# If the requested path and file is not /index.php and the request
# has not already been internally rewritten to the index.php script
RewriteCond %{REQUEST_URI} !^/index\.php
# and the request is for something within the component folder,
# or for the site root, or for an extensionless URL, or the
# requested URL ends with one of the listed extensions
RewriteCond %{REQUEST_URI} /component/|(/[^.]*|\.(php|html?|feed|pdf|vcf|raw))$ [NC]
# and the requested path and file doesn't directly match a physical file
RewriteCond %{REQUEST_FILENAME} !-f
# and the requested path and file doesn't directly match a physical folder
RewriteCond %{REQUEST_FILENAME} !-d
# internally rewrite the request to the index.php script
RewriteRule .* index.php [L]
#
## End - Joomla! core SEF Section.

# # av:php5-engine
AddHandler av-php53 .php

qui una guida per altervista con altri codici

edit non avevo letto bene il tuo htaccess, quello che hai postato contiene solo i servizi di altervista cioè php 5.3 che gia c'è in quello che ti ho dato io, gli altri due sono uno per la toolbar e uno per l' AntiHotlink dal pannello di controllo lo vedi come "antifurto banda" puoi tranquillamente reinserirli alla fine del codice che ti ho dato, ma non ripetere quello del php 5.3

Grazie per la risposta e perdonami per il ritardo credevo che mi arrivasse la notifica in email.