On Apr 29, Manuel Bouyer wrote

> This is a know bug, I think it has been fixed now: the 3c509b shows up
> as both regular ISA and PnP board (in fact, 3com had some kind of PnP for
 their
> boards, before the real PnP was normalised, the 3c509b use both).

I had a similar problem with a cheap NE2000 on an old 486 when I installed
the latest snapshot.  The 2 disk boot detected the NE2000 two times
(non PnP and PnP, although the PnP was disabled on the card (I checked))
and then crashed; I installed with the 'small' boot floppy but  after
installing I
could not boot for the same problem (the small kernel failed also.)  I
removed
the NE2000 and boot went fine. Next I built a custom kernel without PnP and
now everything works.

I hope this information is useful,

Regards,
Federico Lupi