Nvidia nfroce 4 motherboard and forcedeth driver

[Jamie Dobbs]

I have noticed that my Gigabit ethernet runs about half as fast under 
Ubuntu  (approx. 1.5MB/s) using the forcedeth driver as it does in 
Windows using the Nvidia driver (approx 3.1MB/s). These figures are at a 
known network state copying the same files to and from the same location.
Is there anything I can do to tweak the forcedeth driver or am I best to 
just give up and buy a better supported Gigabit card for using under 
Ubuntu?
If I am best to purchase a new network card does anyone have any 
suggestions for a reasonably priced Gigabit card?