6
Okay I tried the latest nightly...
Registered a new username. Activated the account. Tried to log-in. Wrong password. Checked the database... it had saved the wrong MD5 password. I changed the password it had saved to the same MD5 password I set up as my Admin account, and the secondary account logged in just fine.
Also using the Recover Lost Password cannot find the user's account no matter what email address is used.
I have the "Extended Profile" mod installed.