I am using ubuntu 12.04, I connected my Ethernet cable, it worked for couple of days and then it stopped for an unknown. I have checked the IP to DNS. Everything is fed properly but now it does not work. I installed Win 8 on Dual Boot and there with same configuration and it is working. I have tried everything visited forums but I couldn't get a viable answer. I didn't delete any thing, on last day I was using deluge. Please help me. Any specification is needed please tell.