i just compiled new dovecot 1.0.rc6

im using for userdb passwd and for passdb shadow
every thing worked nice with dovecot 0.99
but now config is changed a little ..and im a confuse how to set it up
i tryed but dovecot fails

this is all i get in /var/log/maillog:
Aug 9 20:03:06 shramba dovecot: Dovecot v1.0.rc6 starting up
Aug 9 20:03:07 shramba dovecot: Login process died too early - shutting down
Aug 9 20:03:07 shramba dovecot: child 353 (login) killed with signal 11
Aug 9 20:03:07 shramba dovecot: child 354 (login) killed with signal 11

any idea?

looks like rc6 not working ...rc5 works