После добавления редиректов в.htaccess вылезла ошибка 404 - Joomla 2.5: Настройка и оптимизация

Доброго времени суток!
Добавил в .htaccess редирект 301, удалил index.php из URL.
и сайт перестал работать. Выходит ошибка 404. После
удаления из .htaccess последних добавлений (удаления index.php из URL), появилась ошибка 500.
Спасибо хостеру, исправил ошибку 500 (были BOM), ошибка 404 упорно не уходит.
Вот содержание .htaccess:
##
# @package      Joomla
# @copyright   Copyright (C) 2005 - 2014 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

RewriteCond %{REQUEST_URI} ^/sitemap.xml
RewriteRule .* /index.php?option=com_xmap&sitemap=1&view=xml
## 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 <a href="http://cityadspix.com/tsclick-BQBE4NPP-VRMIQUYF?url=http%3A%2F%2Fwww.enter.ru%2Fproduct%2Felectronics%2Figra-dlya-pc-mass-effect-2060401002513&sa=mh&bt=20&pt=9&lt=2&tl=3&sa=mh&im=Mjc3NS0wLTE0MTcwMDg4NTYtMTM4NDI3NzI%3D&fid=NDQ1NzU2Nzc1&prdct=08390a34013b0c3702&kw=of%20the" target="_blank" alt="Art of the Mass Effect Universe" title="Art of the Mass Effect Universe" style="">of the</a> 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.
RewriteCond %{HTTP_HOST} ^www.eldoradoestate.ru\.ru$ [NC]
RewriteRule ^(.*)$ http://eldoradoestate.ru/$1 [R=301,L]
#
## 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 <a href="http://cityadspix.com/tsclick-BQBE4NPP-VRMIQUYF?url=http%3A%2F%2Fwww.enter.ru%2Fproduct%2Felectronics%2Figra-dlya-pc-mass-effect-2060401002513&sa=mh&bt=20&pt=9&lt=2&tl=3&sa=mh&sa=mh&im=Mjc3NS0wLTE0MTcwMDg4NTYtMTMwMTg4MjU%3D&fid=NDQ1NzU2Nzc1&prdct=08390a34013b0c3702&kw=of%20the" target="_blank" alt="Art of the Mass Effect Universe" title="Art of the Mass Effect Universe" style="">of the</a> 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.
Action php5.3-script  /cgi-bin/php5.3.cgi
AddType php5.3-script .php

Помогите, пожалуйста, голову совсем сломал, не пойму в чем дело. !

Удалил кэши, сайт, наконец-то, показал свое личико. Тока вот,
поиск в кучу собрался, а и в каталоге страницы поменяли свой
первоначальный вид. Че делать? В чем тут проблема возникла?