I running 2003 server using this nic:
using these drivers:
i have a gigabit netgear switch, and a cisco 2650 100mbit switch. if i plug the nic into either, it will only go to 10mbit.
on the netgear you can see it trying to do 100mbit, (the light blinks 3 or 4 times) then it seems to settle on 10mbit.
if i manually set it to 1000mbit or 100mbit via the drivers it will show a link light but no traffic will pass. if i set it to auto negogiate, it does 10mbit on either switch.