Can't change back to a name in my username history

[Juniper4004]

I name changed but now can't use my normal username; it says that the name is used by someone else (yes, ME!).

Does anyone else have this? Is it because I changed my email address post hackergate?

Oh dear. That is annoying Juniper
Do you want to drop us a line on [email protected] and we'll take a proper look?