[Security-Discuss] msec strange messages

I'm using mdk 9.1
and i'm facing these messages in /var/log/messages 

 ------
Aug 25 07:05:24 ananda : Security Warning: These files belonging to packages 
are
modified on the system :
Aug 25 07:05:24 ananda : - /boot/message-graphic
Aug 25 07:05:24 ananda : - /usr/X11R6/lib/X11/fonts/TTF/fonts.cache-1
Aug 25 07:05:24 ananda : - /usr/X11R6/lib/X11/fonts/Type1/fonts.cache-1
Aug 25 07:05:24 ananda : - /usr/X11R6/lib/X11/icewm/menu
Aug 25 07:05:25 ananda : - /usr/include/linux/netfilter_ipv4/ipt_DSCP.h
Aug 25 07:05:25 ananda : - /usr/include/linux/netfilter_ipv4/ipt_ECN.h
Aug 25 07:05:25 ananda : - /usr/include/linux/netfilter_ipv4/ipt_ULOG.h
Aug 25 07:05:25 ananda : - /usr/include/linux/netfilter_ipv4/ipt_conntrack.h
Aug 25 07:05:25 ananda : - /usr/include/linux/netfilter_ipv4/ipt_dscp.h
Aug 25 07:05:25 ananda : - /usr/include/linux/netfilter_ipv4/ipt_ecn.h
Aug 25 07:05:25 ananda : - /usr/include/linux/netfilter_ipv4/ipt_pkttype.h
Aug 25 07:05:25 ananda : - /usr/include/linux/netfilter_ipv6/ip6t_REJECT.h
Aug 25 07:05:25 ananda : - /usr/lib/mozilla-1.3.1/defaults/pref/unix.js
Aug 25 07:05:25 ananda : - /var/log/squidGuard/squidGuard.log
Aug 25 07:05:25 ananda :
Aug 25 07:05:25 ananda : Security Warning: These config files belonging to 
packa
ges are modified on the system :
Aug 25 07:05:25 ananda : - /etc/X11/fs/config
Aug 25 07:05:25 ananda : - /etc/bashrc
Aug 25 07:05:25 ananda : - /etc/exports
Aug 25 07:05:25 ananda : - /etc/host.conf
Aug 25 07:05:25 ananda : - /etc/httpd/conf/commonhttpd.conf
Aug 25 07:05:25 ananda : - /etc/httpd/conf/httpd2.conf
...
and so on, 

i think it's coming from msec program, is that true? How could i know if 
it's realy a security problem? Every day appears the same message. 

What should i do? 

thanx 

henrique paiva

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