> From: Paul Kranenburg <pk@cs.few.eur.nl>
> Date: Sun, 11 Feb 1996 23:00:02 +0100 (MET)
> 
> pleasant. Also, you might run over mapped devices on some architectures,
> reading their registers etc., and making some of them unhappy..

	Yes, I can vouch for this. On the HP300, running xdm with
authentication enabled will trash the dcm device (xdm generates random
bits by checksumming the first 16 megs of /dev/mem and walks on the
dcm's registers... Thanks to Charles for saving me from ripping my
hair out.