Mil disculpas, en tu .htaccess, tienes que poner el path a partir del público, es decir, "/index.php"
Con eso te debería funcionar. Si abajo te funciona y arriba no, seguramente sea porque no tienes mod reewrite instalado...
Te dejo un link para comprobar si lo tienes instalado.
http://www.wallpaperama.com/forums/h...abled-t40.html
De todas formas, te paso mi .htaccess, tienes un condicional abajo donde puedes poner una url en caso de no estar instalado, así podrás comprobar si esta o no.
Suerte,
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
#Removes access to the system folder by users.
#Additionally this will allow you to create a System.php controller,
#previously this would not have been possible.
#'system' can be replaced if you have renamed your system folder.
RewriteCond %{REQUEST_URI} ^system.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#When your application folder isn't in the system folder
#This snippet prevents user access to the application folder
#Submitted by: Fabdrol
#Rename 'application' to your applications folder name.
RewriteCond %{REQUEST_URI} ^application.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#Checks to see if the user is attempting to access a valid file,
#such as an image or css document, if this isn't true it sends the
#request to index.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$/index.php?/$1 [L]
</IfModule>
<IfModule !mod_rewrite.c>
# If we don't have mod_rewrite installed, all 404's
# can be sent to index.php, and everything works as normal.
# Submitted by: ElliotHaughin
ErrorDocument 404 /index.php
</IfModule>