Hpux 10.20: auditing enabled and report..nothing

I have enabled auditing on hpux 10.20 vim /etc/rc.config.d/auditing AUDITING=1 PRI_AUDFILE=/.secure/etc/audfile1 PRI_SWITCH=1000 SEC_AUDFILE=/.secure/etc/audfile2 SEC_SWITCH=1000 AUDEVENT_ARGS1="-P -F -e moddac -e login -e admin" AUDEVENT_ARGS2="" AUDEVENT_ARGS3="" AUDOMON_ARGS="-p 20 -t 1 -w 90" start auditing audsys -c /.secure/etc/audfile1 -x /.secure/etc/audfile2 -s 1000 -z 1000 i reboot and.. audisp -u root users and aids: root 0 All events are selected. All ttys are selected. Selecting successful & failed events. TIME PID E EVENT PPID AID RUID RGID EUID EGID TTY as you can see no events are reported, why?