slow data movement accross lan

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Wondering if I've run into something yarrow specific here.

I'm noticing what seem like very slow speeds moving data from a
running rh 9 box to a yarrow box accross a local network.  With ncftp
running from yarrow to rh9 on a get action I'm seeing a high of 5.65
KBs (mostly less) being moved.  Isn't that very slow?  

I have nsf setup between the two as well but a cp -a seems slow too.
Its way faster than ftp of course but still a timed cp -a of some
380868986k across nfs directory looks like:
(over 1/2 hour for some 380+MB)
real    32m40.217s
user    0m0.060s
sys     0m1.490s

(That seems quite slow too isn't it?)
So maybe there is more than ethernet speed involved?

Concerning the ethernet speed:
I've sort of lost track of how to check on my ethernet settings.
Seems like we once used something like mii-tool.

That returns:
 # mii-tool
eth0: 10 Mbit, full duplex, link ok

And dmesg shows the device on yarrow:

   3c59x: Donald Becker and others. www.scyld.com/network/vortex.html
   See Documentation/networking/vortex.txt
   00:0d.0: 3Com PCI 3c905B Cyclone 100baseTx at 0x9000. Vers LK1.1.18-ac
    00:01:02:ed:56:8a, IRQ 11
     product code 4347 rev 00.12 date 12-06-00
     Internal config register is 1800000, transceivers 0xa.
     8K byte-wide RAM 5:3 Rx:Tx split, autoselect/Autonegotiate interface.
     MII transceiver found at address 24, status 786d.
     Enabling bus-master transmits and whole-frame receives.
   00:0d.0: scatter/gather enabled. h/w checksums enabled
   divert: allocating divert_blk for eth0
   divert: freeing divert_blk for eth0
   ip_tables: (C) 2000-2002 Netfilter core team
   PCI: Found IRQ 11 for device 00:0d.0
   PCI: Sharing IRQ 11 with 01:00.0
   3c59x: Donald Becker and others. www.scyld.com/network/vortex.html
   See Documentation/networking/vortex.txt
   00:0d.0: 3Com PCI 3c905B Cyclone 100baseTx at 0x9000. Vers LK1.1.18-ac
    00:01:02:ed:56:8a, IRQ 11
     product code 4347 rev 00.12 date 12-06-00
     Internal config register is 1000000, transceivers 0xa.
     8K byte-wide RAM 5:3 Rx:Tx split, autoselect/10baseT interface.
     Enabling bus-master transmits and whole-frame receives.
   00:0d.0: scatter/gather enabled. h/w checksums enabled
   divert: allocating divert_blk for eth0


mii-tool on On rh9

eth0: negotiated 100baseTx-HD, link ok
eth1: no link





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