The nebula2\username login is being phased out in favor of a single login using your netid credentials. New Nebula clients start off using netid\username, as do those who have a new or rebuilt computer. We are encouraging individuals and departments to make the move as soon as practical. While we do not have a firm deadline at this point, certain service improvements can not go forward until everyone is using netid logins.
Hundreds of Nebula clients have already made the switch. There is an almost zero risk of problems.
To get started with your own migration from nebula2 to netid logins, follow these instructions.