Thank you for your answer :)
I, however, think we misunderstand each other.
I want the customers to validate their account by clicking the confirmation link in their email, but I don't want to manually activate the accounts.
I have chosen the setting email validation, which should accomplish this.
However, it acts as if I chose the admin validation - the customer receives a link, but even if they click it, when they try to sign in it says the account is not active, and I need to do it manually through the control panel.
Do I make sense? :)