So apparently I just discovered that I have two network cards in my computer, but only one of them works with my Ubuntu install, while both work with windows XP.

The two cards are:

Agere Systems ET-131x PCI-E Gigabit Ethernet Controller
Realtek RTL8139/810x Family Fast Ethernet NIC

Only the realtek one works under an Ubuntu boot, while both work under XP. I was just wondering if it would be worth the time to get the Agere Systems card to work under Ubuntu as well, if it's better than the Realtek?

any help would be appreciated

thanks

Do you have networked computers and do the other computers have gigabit network cards? Does your switch or router also have gigabit ports? If the answer to any of these questions is "NO" then don't worry about the faster card. If the answer is "YES" to all the questions then it might be worth the effort. The gigabit card might use less computer resources than the fast ethernet card and would be much faster at transfering data.

I did find that Agere was bought by LSI and that there seem to be Linux drivers for kernals 2.4 and 2.6 but I couldn't find the drivers.