Bugzilla name mixup?

[Steven Bosscher]

Hi Dan,

I was looking at Bugzilla's "Edit users" option to see
what it was, and I looked up my own login name (steven).
I was surprised to find out that there is another
"Steven Bosscher" user:  "steven@la-france.net".
That is wrong, I don't have that email address...

A Google search shows that "steven@la-france.net" is "Steven Lobbezoo"

Any clue what went wrong here, and can you fix this?
Maybe I'm not the only one with this problem?

Thanks,
Steven