Hi Sean,

Sean Doran wrote:
> 
> Ok, it's neat that it works, but, uhm, it would be neater
> if a "halt" would cause the emission of a FIN_ACK...

I'd expect shutdown to shut the machine down properly,
and halt to stop the machine as soon as possible, without
any processes having a chance to properly terminate.

  Guenther

P.S.: I haven't checked if shutdown does send the FIN_ACK,
though.