I don't know if it will cause probs as i have not tried it out. The reason why i have not tried out is the text in the section under Create, modify, of remove user accounts: The account name should contain only lower-case letters, numbers, and hyphens, and should start with a lower-case letter. For example "betty", "hjohnson", and "mary-jane" are all valid account names, but "3friends", "John Smith", and "henry_miller" are not.