login errors

[Jeremy C. Reed]

> I recently had an issue with one of my rhes4 servers regarding one specific
> account.  This account has alot of cron jobs that kickoff at various times,
> ran as root, which did 'su - oracle -c'.  Early saturday morning, the cronjobs
> started getting the following error:
> 
> su: cannot set user id: Resource temporarily unavailable

Did you have a recent Linux kernel update? (There were some recent kernel 
changes regarding setuid().)