how to disable CTRL/ALT/DEL
 

trying to disable the cTRL/ALT/Del which reboots the machine, i've tried to comment out
#ca::ctrlaltdel:/sbin/shutdown -t3 -r now
in /etc/inittab
doesn't seem to work ,anyone know's why?

it seems you have to get rid of the line or place somthing in
ca::ctrlaltdel:/bin/echo "CTRL-ALT-DEL Disable"

that should work, after a reboot, but you might want to go a little further and run a command instead of shutdown, e.g. run "logger" to say someone hit that key combination:

ca::ctrlaltdel:/usr/bin/logger ctrlaltdelete attempted