Recently I installed Ubuntu 10.10 on my dev box, making a dual boot with Windows XP. Before installation, everything worked fine, but now Windows XP cannot connect to the network saying that cable is not connected. I tried connecting it to different devices, and it always fails. Under Ubuntu I observe the same issue, but occasionally, usually it works and sometimes it can't find the network.

Do you people think it's Ubuntu related, or is my network card broken?