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After upgrading from 5.2 to 6.0, logins failed to work until I created a shadow password file with "pwconv" The messages from my syslog: May 13 22:23:29 dacron-kangaroo-triptych PAM_pwdb[570]: get passwd; pwdb: structure is no longer valid May 13 22:23:30 dacron-kangaroo-triptych login[570]: FAILED LOGIN 1 FROM (null) FOR flee, Authentication service cannot retrieve authentication info.
I do not see this behavior (required pwconv in order to login) on Red Hat 6.0 intel/or sparc. I also don't see the error message. Check your PAM config in /etc/pam.d for the service that is causing the problem. Perhaps you configured the requirement to use shadow passwords sometime in the past ... ? Please reopen with more information if you still think this is a software problem.