Peter Galbavy <peter@wonderland.org> writes:

> 
> > Problem is, with -current, I am getting various user-land randomness,
> > like core dumps, file not found etc etc. Occasionally I see:
> > 
> > 	NMI port 61 a0, port 70 ff
> 
> One things that occured to me after I posted this was that it could
> be a memory problem. Could the NMI and the user-level coredumps
> (plus occasional reboots) be symptoms of memory parity errors ?

Definitely.  On PCs, NMIs generally indicate memory errors.  If you
had more than one bad bit, it could easily have manifested as core
dumps instead.