openssh configuration

[Lincoln Leung <lkleung@ee.cuhk.edu.hk>]

hi,

i've just installed openssh-2.3.0p1 on my Debian 2.2 but failed to login
using users' passwords. Password authentication failed all the time and it
prompted "Permission Denied" on the command line. a message, "Failed
password for [user] from ......" was logged in auth.log. but i'm sure the
password is correct. i wonder if the configuration for PAM is incorrect.
Below is the content of /etc/pam.d/sshd:

#%PAM-1.0
auth       required     /lib/security/pam_unix.so shadow nodelay
auth       required     /lib/security/pam_nologin.so
account    required     /lib/security/pam_unix.so
password   required     /lib/security/pam_cracklib.so
password   required     /lib/security/pam_unix.so shadow nullok
use_authtok
session    required     /lib/security/pam_unix.so
session    required     /lib/security/pam_limits.so

all the paths and PAM modules are installed. Do anyone has any idea about
all these?

thanks.

Lincoln Leung