I want both www and non-www to work !

Thanks a lot, for your advices , my mysite.conf  was as silentium's but i wrote it wrong without realizing it. I had this part right.

The problem was with the htaccess, i removed the 2 lines you mentioned and it solved the problem.

Glad I could help.

I would recommend you, as mentioned in above replies, only use either www or none www urls.