Try This...
Click: Profile-->Account Related Settings-->The uppermost text box is the name that is displayed next to your posts, etc. Example: My 'name,' the one I can change, is 'Jag.' While 'Jag' is not necessarily my 'username.'
This allows you to change your displayed name to Edge, even when someone else has it. Technically, you could change your displayed 'name' to 'Jag,' and have the same displayed 'name' as me. But there is no reason you would EVER want to do that...right?

PS:Don't you dare change it to Jag!
