It was just a crappy 3com NIC that just failed after 3 days of using my new PC. probably static from when I inserted the cat5 cable in, who knows. anyway, none of my mates computers are affected so its not the hub. I put in a new NIC, Genius LAN Ethernet GTRIII or something like that, works nice and fast. But mobo is probably f**ked due to taking out the faulty 3com NIC when the power cable was still in.