Ok, so since I've updated to lion (Also just changed routers, but other people including other macs don't have problems with it) I keep losing internet connection. If I turn the Wi-Fi off and back on it reconnects for maybe a few minutes, seconds or hours. Same effect when I use the diagnostic utility. The Internet, ISP and server are usually red or yellow when it loses internet. PLEASE someone help me this is killing me! Only happens at home though. At work it works fine. What can be the problem?