[Mediawiki-l] Not Registered Users After Upgrade

[Graham]

  Hello,

After upgrading to 1.16.0 on my test wiki, there's two users that are 
deemed "Not Registered if I click on them under "User list".

Here is the error:

User account "JH293137" is not registered.

Please check if you want to create/edit this page.

Any ideas would be greatly appreciated.



Thanks,
Graham