We are having the exact same issue, I wish didnt do the upgrade now! something is seriously broken. I have the output you last requested from our system
KARMA[nagiosxi]> chage -l nagios
Last password change : Jun 29, 2011
Password expires : never
Password inactive : never
Account expires : never
Minimum number of days between password change : 0
Maximum number of days between password change : 99999
Number of days of warning before password expires : 7
KARMA[nagiosxi]> cat /etc/group | grep nag
nagios
nagcmd
KARMA[nagiosxi]> service nagios status
nagios (pid 19957) is running...
KARMA[nagiosxi]> service ndo2db status
ndo2db (pid 4603) is running...
KARMA[nagiosxi]> service mysqld status
mysqld (pid 4225) is running...
KARMA[nagiosxi]> service postgresql status
postmaster (pid 23172 22958 22951 22945 22935 16732 9092 8973 7257 7243 7238 7233 7226 7222 7217 7195 7190 4392 4391 4390 4387 4321) is running...
KARMA[nagiosxi]> service crond status
crond (pid 4406) is running...
KARMA[nagiosxi]>
Rebooted re-upgraded what not! Nothing helps.