🚀 go-pugleaf

Hello

I'm a relative 'newbie' in linux terms, having so far only set it up
to run IP masquerading to connect a small network to the internet via
a shared modem and run a local web server to test CGI programs before
uploading.  As a consequence I may demonstrate a frightening amount of
ignorance. 

I keep the /var/log/messages file open with less in a terminal window
to keep an eye out for problems/attacks on the ipchains
router/firewall.  This is usually fairly quiet but every hour I get
two groups of messages.  One is of the form

PAM_pwdb[xxxx] : su session opened for user news by uid=0
PAM_pwdb[xxxx] : su session closed etc

next group are 4 messages from named about flushing the cache of RRs
(what?) and usage statistics.

Is there any way to reduce the frequency of these messages, presumably
by reducing the frequemcy of the operations that generate them.  I
think I know what named is doing - DNS for my local network and
lookups for internet requests, but I cant find how to change the time
between "flushes".  The other thing (PAM_pwdb) I have no idea about
and havent been able to find in my books.

Many thanks

Mark
who is so fed up with recieving offers of 20million email addresses
every day that he has added a nospam to his email address