I received my iMac yesterday and am still in the process of learning about OSX in general and this computer specifically. If i hard wire the internet connection with an ethernet cable, should i turn off the airport connection? Does it matter? Last night i tried to watch a couple of youtube videos. For a 1 min video, at 240p (lowest setting possible) it took like 15 min for the whole video to load. I checked speedtest.net on both the imac and my ipad and got over 11Mbps speed and 19-26ms ping. Whats going on?