thx for the fast reply
well my company has a lot of databases servers ,and sometimes they need to change the system date to insert some old records , so they have to change the date (this a database migration) .sometimes employees forget to change the date back ,so the next boot the server wont boot up because of fsck check (the date of last modified is in the future) .
anyway ,i tried what you told me
[root@srv2115 ilvista]# grep hwclock /etc/init.d/*
/etc/init.d/halt:[ -x /sbin/hwclock -a -e /dev/rtc ] && action $"Syncing hardware clock to system time" /sbin/hwclock --hctosys
/etc/init.d/ntpdate: # /sbin/hwclock --systohc
I tried to comment the /sbin/hwclock --systohc but the hardware clock is still changing whenever i change the gnome destop date.
thx a lot ,I think i'm gettin closer !!