Authentication Woes

Hello,

After installing the latest cvs tree this morning, I cannot use 
createuser and createdb. They break when trying to run psql. I can
connect with psql to the template1 database after setting up hba to use
password authentication and starting it with the -u option. 

Does the hba still use trust and ident as well? Is there a primer on the
new authentication scheme?

I am moving up from 6.1.0 on Linux.

Thanks,


-James