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I have a batch of Intel boxes running Scientific Linux 4.4 (a re-spin of RHELv4.4) that I am in the process of updating to SL 5.4 (a re-spin of RHELv5.4). We have a bunch of visitor accounts (ie "vis101") that work on the 4.4 machines but not the 5.4 machines. These accounts exist in LDAP & Kerberos, they are identical to the regular accounts used by permanent people. Now, here's the wacky thing. All of the LDAP and Kerberos data is correct. If I log in as root, su to the account and kinit, the authentication works. I can generate tickets as that principle, do everything normally. If I log in as myself (non-root) and su, I get an invalid password error. I get the same error if I try to log in on console or via SSH. I suspect something in PAM but I cannot for the life of me identify it. Any thoughts as to where to go poking around for configuration changes or fixes? --Rich P.
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