#23 Nagiostat Error

[Anonymous]

My nagiostat gives error in the debug.log file:
!!ERROR: RRD-archive
'/usr/local/nagios/var/befrs002-ping.rrd' does not
exist or is not writable by effective UID.

I did a chown nagios.nagios on the archive directory
and a chmod 777 on that directory.

that am I doing wrong?
It's a nagios 1.2 with mysql support on a suse 9.2
machine with rrdtool-1.0.49-2 rpm package installed.