Well, so much for flat cable eh??? Sorry to hear it won't work for you. I tried one once and it was stuck on 10 so It had to go.
Yes, I crimped the cable myself. It seems that it is not my LAN card as it works fine with a different cable.
And from what I've found online, my wires are in the right order.
I think I'm just going to switch to a conventional round UTP cable. My carpet will look bulky and awkward, but I guess it doesn't beat a faster network.