I am having a little issue with my newly purchased Airport Extreme. I have mostly all of my networked devices conencted via wireless but I have a few devices that I have connected via ethernet. The issue is that the wired ethernet speeds are barely 100 megabits (showing negotiated at 1 Gigabit with no errors) THis is testing via my internet connection and also computer to computer transfers. The odd thing is that my 5GHz wireless or 2.4GHz wireless is just as fast or faster.. For example .. When copying files from my media server to my 27" 2013 iMac I see roughly 80 megabits via wired and over 140 via wireless... I have a 105 megabit download/ 20 megabit upload internet connection and I only see around 50 megabit download wired and I see well over 110megabit on wireless.. new new cables (known good cables) different computers rebuilding the network connection, (IP stack, driver, ect...) soft reset hard reset factory settings reset bought a mount to mount on wall away from any heat sources.. (plasma tv, dish receiver, ect...) Another oddity is that if I plug in my Apple TV via ethernet and try to use my iphone or iMac via a wired connection it is very jittery.. If all is on wireless then it is flawless.. I am out of ideas, do you think this is a faulty unit ? Other Routers work fine and I believe the AP Extreme worked great also a few weeks ago .. I just had it replaced today with a brand new extreme and it is still the same .. slow ethernet.. Any ideas ?