Thus spake explorer@flame.org
> I can reliably crash my machine after adding more memory, for a total
> of 128M in SDRAM DIMMS.  It happens when a program is using nearly all
> the ram, and a good deal of the swap.

You don't say if this is the 386 port but if it is, have you added the
following line to your config?  I'm not sure if it is causing your
problems but you need it anyway.

options     REALEXTMEM=130048

-- 
D'Arcy J.M. Cain <darcy@{druid|vex}.net>   |  Democracy is three wolves
http://www.druid.net/darcy/                |  and a sheep voting on
+1 416 424 2871     (DoD#0082)    (eNTP)   |  what's for dinner.