This conclusion seems less than optimal to me.Thank you for your answers and tips. I will make a very strong password for root and a strong one for a user in the sudo group.Also, i must again say that in my case we speak just about a humble home desktop, without a ""ssh" access"" or whatever complicated.I must mention that "32 characters" is only my guess.In the Handbook it is said: "The root user's password should be long (12 characters or more) and impossible to guess."