I bought this laptop on 2009/09 and I found it can't reconize my hub's network speed well when I plugged with power cord. But if I removed the power cord first then the network speed was going well. I sent this laptop to service center and they feedback a report to me that they can't help for this. Because they replaced my laptop with another network card and main board and got same issue, so they just adjust the isolate plate between power and network card. And they told me they tested it OK five times with their hub and they can't assure this will be fine with other hub. I still have had same issue at my office until now. So what can I do?