FC 2 Reboot problem after Kernel upgrade.

[Franco]

Hi, i have installed FC 2.0 on my server, than i have
used yum to upgrade all packages including last Kernel
update, after the Kernel upgrade when i reboot -n or
shutdown -r , the server close all services and when
it should must reboot it show restarting system without
power off.
If i reboot the server with the old Kernel it give the
same problem but if i don't update the Kernel the reboot
command work fine.
Any ideas ?!