I have a computer that i am doing the initial backup to time machine via a time capsule. So to make it go quicker I plugged it into time capsule with an ethernet cable. However, with the cable plugged in it still seems to be transferring with the speeds of the airport.. when i turn the airport off then it picks up speed and goes much faster... my question is do i always have to turn off the airport when i plug in my ethernet in order to get ethernet speeds? thanks!