>>   There's already hooks to get into ddb and shift virtual consoles -- why
>>   not reboot the machine?  (or run arbitrary programs?)
>Wouldn't that be a serious security problem.  I'm not sure I want
>anyone with physical access to a machine to be able to reboot it into
>single user mode or run arbitrary programs!  

	actually if you allow direct access to the computer, you lose the
	battle - she can pull the plug.  so for me it makes no much difference.

	I'm okay to have a extra knob (sysctl?), or some daemon (maybe)
	to allow ctl-alt-del, and *turned it off by default*.

itojun