Hello I have problem with language switcher in slave site. Specifically, I have the following setup:
•Jms  1.3 in Joomla 2.5.8
•I created master.example.com  with language filter enabled and  two language install en-GB and el-GR. 
•I have done all the necessary setup for multi-lingual in master site and it works.
•After that, I have created new site using template (replicate master domain) under /var/www/domains/example.com and with domain name:  example.com
•I am not using cpanel, I have made all the necessary changes with virtualhost under httpd.conf and the virtual hosts are working
The problem is with example.com, when I am changing the language from the front-end, nothing is changing in menu or pages.
The URL is changing from /el to /en but with no effect in website. 
I thought the problem was like the following 
www.jms2win.com/en/forum/24-joomla-multi...e-filter-causes-loop  
But it didn't changed by specifying the document root for virtual hosts
What can I do to fix the problem?
Thanks in advance