In my internet connection which is 14443 kbps,When I download something (avg 1.2-1.4mbps)my brother lags and his connection is getting slowed down.I am connected via ethernet and hes connected wireless.It happens to him all the time.Its not a quincidence.For example if when he plays call of duty black ops he gets 60-90ms.When I start downloading it jumps to 450.Can you help me fix this issue?