When I look at the other questioner's question, the title bar lists him as the "current" user, not me - at least, it puts up his reputation, and his gold and silver awards. If I click on the links, they all go to me - but the reputation and award counts never change. The drop-down information is also mine.
I knew that using my first name only was going to be a problem.... I don't suppose changing a name is possible or even wise... is it?
PS (thanks for the migration!)
ACK! I think I found the reason I was confused: the question is on StackOverflow - and I spend most of my time on ServerFault. Thus my profile on StackOverflow doesn't match my profile on ServerFault. The questioner was actually this person.
Is it wise to change my username or is that a mistake? Is there anything I should know about changing the username?