I finally managed to get my hands on the signup / signin process in my theme. when i received the account validation confirmation email with the link to confirm my account, i got a custom meessage displayed to congratulate the user with a link to his account. When the user click on the account link, he reaches his account page, but 2 flash messages are appearing 'Successfully activated your account' and 'User is already active!'

How come ? i dont need this 2 messages, how to get rid of them please ?