> I have a Compaq DeskPro 4000 with an integrated
> Netelligent (TLAN) 10/100 Ethernet card.  I can
> see from the hub it's plugged into that it is
> running at 100Mb.  All the other machines on this
> hub are running at 10.  I am suspicious that this
> is causing some kinds of problems with
> communications between machines on my LAN.  Is
> there a tool that can be used to hard code the
> NIC to run at 10?

miidiag might work for you. If you have debian it is:
# apt-get install mii-diag
# mii-diag -f 10base-T

FWIW, I *HATE* the DeskPro 4000 NIC. The chipset purports to support Auto Negotiation, but does
'Auto Sensing' -- it just guesses at the network speed and duplex. It frequently guesses the speed
and duplex wrong. I was responsible for rolling out a switched network and we had to locate and
force about 80 of these machines to 10/Half, since they would not play nice. When we got rid of the
last one, it was a happy day for me....