Daniel Brown writes:
> I've had mixed experiences under Solaris x86 with 3C905B-TX cards in the
> past - 100Mbs/FD gave the performance levels you quote, but 100Mbs/HD
> worked more-or-less fine. This was on a Pentium-II 450 machine,
> configured using the 3Com provided disk.

I had that problem too under Solaris/x86 2.6 (~70k/s ftp's). Upgrading
to Solaris 7 fixed it (~7500k/s ftp's).

As to netbsd: I'm running a few machines with 3c905 and 3c905B cards,
(they're at -current or 1.4_beta) and they work really well.  In fact, 
the ftp server I used to get the 7500k/s rate was a AMD K6-233 running
NetBSD-current, with a 3c905b.