I seem be experienceing what you may call a 'minor problem' with this hack in the updated form. (I have reverted back to the original release now)
If someone tries to login as another user with any password, it rejects it, but I get no email.
If I try to log in as the admin WITH ANY PASSWORD, IT LETS ME IN!!!

(I do get the email saying failed lonin though.

)
Just thought it's let you know before I start hacking all ya boards.

(j/k)