I have an iMac and a Mac Pro that I frequently connect with a ethernet cable to transfer movies back and forth, When I do this, it messes up the internet connection between the two Macs as well as Windows computers in the house. The internet connection will just stop every few minutes and it takes several clicks to get links to open. If I click on a link once, I just get the spinning wheel and that will keep spinning all night if I let it, same with the Windows computers. Web pages never load up completly, even now there is a blue bar accross the internet address as I am typing this in Safari. The problem remains for a long long time, even days after I've removed the ethernet cable from the Macs. The computers are all using WiFi and an AEBS. I have no idea how to fix this. Please help!