From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; fi-FI; rv:1.7.5) Gecko/20041108 Firefox/1.0 Description of problem: Cron wasn't working for my non-root account "skarkkai", and in syslog was appearing lines crond[4420]: pam_succeed_if: requirement "uid < 100" not met by user "skarkkai" Invoking authconfig and clicking "Next" without making any changes made some changes in /etc/pam.d/system-auth (I don't have the old one readily accessible, but can dig it out if necessary), and cron started working. Perhaps /etc/pam.d/system-auth should have been automatically generated at some point where some pam settings related bug was fixed. When I today ran authconfig, I had all the FC3 updates installed.
The problem is that we can't know if user didn't edit the system-auth file by hand. If he did it would be really bad to rewrite it without his manual intervention. Authconfig currently doesn't preserve most of user changes of system-auth file. However I agree sometimes it might be possible to use a script to modify the system-auth file in the post install script of pam. About your problem - the log message is probably irrelevant to the not working cron because the authconfig only adds option to the pam_succeed_if to not generate any logs. It must have been other bug. Could you attach the new and old system-auth files?
Actually I, unfortunately, don't have the old system-auth file anymore. I'll attach the new one anyway, though I don't expect it to be of much help.
Created attachment 109522 [details] The new system-auth file.
I don't see anything suspicious in your system-auth file, anything that was fixed in recent time. Note it could be even other files as /etc/nsswitch.conf.