Virtual box truubles on Lucid

Last night I upgraded to lucid. Every thing seemed to work smoothly. Then I tried virtual box. It failed saying that the kernel modules are not loaded. I quikly fixed the problem with
~$ sudo /etc/init.d/vboxdrv  setup
Then virtual box started showing the following error message.

VirtualBox can't operate in VMX root mode. Please disable the KVM kernel extension, recompile your kernel and reboot (VERR_VMX_IN_VMX_ROOT_MODE).

 The following  commands fixed it.
$ sudo modprobe -r kvm-intel
$ sudo modprobe -r kvm-amd