IT Pet Peeve of the Day

Can I say how annoying it is that people don't know their user names? They log on to these computers and/or programs every day and yet they have a coronary when I log on as the administrator because they don't remember their login names. Not only that, they don't know they don't know their login names. They come to me and say that they can't log in. The only reason for this is because they don't have the right login name. Ugh.