2010-12-01 15:58 AEST by Arthur Barrett - When running CVS Suite Server 2009 on Mac OS 10 Snow Leopard 10.6.4 and try 
and connect via pserver get this error:

minimac:~ abarrett$ cvs -d :pserver:abarrett@localhost:/testrepo login
Logging in to :pserver:abarrett@localhost:2401:/testrepo
CVS Password: 
cvs [login aborted]: unrecognized auth response from localhost: cvsnt [server 
aborted]: PAM failed to release authenticator

2010-12-01 16:22 AEST by Arthur Barrett - This can be fixed by changing /etc/pam.d/cvsnt from:
# login: auth account password session
auth       required       pam_nologin.so
auth       sufficient     pam_securityserver.so
auth       sufficient     pam_unix.so
auth       required       pam_deny.so
account    required       pam_permit.so
password   required       pam_deny.so
session    required       pam_permit.so


to:

# login: auth account password session
auth       optional       pam_krb5.so
auth       optional       pam_mount.so
auth       sufficient     pam_serialnumber.so serverinstall legacy
auth       required       pam_opendirectory.so
account    required       pam_nologin.so
account    required       pam_opendirectory.so
password   required       pam_deny.so
session    required       pam_uwtmp.so
session    optional       pam_mount.so


Needs further investigation as to what is the 'minimum' we can get away with 
changing...  A little testing shows that:

auth       sufficient     pam_securityserver.so
auth       sufficient     pam_unix.so


replaced with:

auth       sufficient     pam_opendirectory.so

Is enough.  This should be tested for compatibility with at least 10.4, and 
maybe 10.4

2015-11-03 14:48 AEST by Arthur Barrett - Change 'hardware' on bug report to 'mac'.

Same error reproducible on Mac OS X 10.9

the fix described here works OK for Mac OS X 10.9 too.