Strange behavior of RH 6.2

[Szemerédy Gábor <gabor rc-subotica co yu>]

Hello!
I installed RedHat 6.2 Zoot with kernel 2.2.14-5.0.
After the first boot I get message:
Insmod: Note : /etc/conf.modules is more recent than
/lib/modules/2.2.14-5.0/modules.dep ( 9 times).
I can not ping my eth0 address from the console. (from localhost).
ifconfig shows that eth0 is OK.
When I type "echo 1 > /proc/sys/net/ipv4/ip_forward" and reboot the
system
the content of ip_forward is 0 again!
If I define some route with route command , the route is visible typing
"route -n"
but it disappears after rebooting!
Why?
Thanks!

begin:vcard 
n:Szemerédy;Gábor
x-mozilla-html:TRUE
url:http://www.srce.net
org:Zavod za informatiku i AOP;HW-SW
version:2.1
email;internet:gabor rc-subotica co yu
title:Szemerédy Gábor
adr;quoted-printable:;;Adolfa Singera 12=0D=0A;Subotica;;24ooo;Yugoslavia
x-mozilla-cpt:;32400
fn:Szemerédy Gábor
end:vcard