ifconfig may be able to lock the speed when you
setup the eth0 interface.
Networks do not run at 100BaseT though, it's the
individual links that can run at whatever speed - are you saying that the link
light on your stack from the 3c905b card is only showing 10BaseT?
What driver in the Kernel are you using for that
card? (or do you use a stock Kernel?)
If you are sure the link is only coming up 10BaseT,
check your wiring and then send a revelent portion of the 'dmesg' output to the
list.
-Nathan
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