Forgot to meantion the problem is the machine is still up, but the
hard disk goes into a sleep mode and refuses to spin the drive back
up. Don't know if this is NetBSD related or if this is actually some
setting I can switch off inside IRIX. Not sure. But either way, if I
leave the system overnight (which I always do) when I come back to it
in the morning, ssh hangs and if I console in, it will hang whenever I
try and run any command.

-Jeremy