I generally run with 3G off and now with OS 3.0 whenever I place a call I immediately drop off the Edge network, i.e. the "Edge" in the upper left disappears as soon as I place the call. I end the call and the Edge reappears. Very repeatable This does not happen when I turn 3G on...the "3G" in the upper left stays on during the call. I think it may be more than graphical as the people I call have been saying I sound echo-y, and I generally used to only get that when I was in an area with very poor reception where the iPhone had to drop down to a pre-Edge network. Can anyone confirm their OS 3.0 with 3G off will not place calls on Edge? Thanks!