giles mentioned in this question that the default MySQL username is truncated to 16 characters. You probably already thought of this, but when I read this it made me think...Ut 'oh, what if there are two users named xxxxxxxxxxxxxxxxa and xxxxxxxxxxxxxxxxb? That is 17 characters long, but the first 16 are identical. I was tempted to create two accounts in order to test this question, but since I took PA offline yesterday with something I did, I figured I'd just make sure you thought of this situation...☺