Last week I paid to become an developer for the iPhone as I had been using the free SDK for a while and wanted to try the apps I made on my phone and eventually submit them to the store. I went through the whole process; bought the standard edition, got my code, downloaded all the software, got my iPhone activated. The phone works fine except I cannot get any data while on the AT&T network. When I am home and on my WIFI, I have no problems. I can make phone calls and get SMS messages, but anytime I try to check email or use another app that requires data while away from my network and on the AT&T one, it tells me I have no network connection. This only started after I installed the 3.0 Beta, build 5 this morning. I'm not sure if I activated something wrong on the phone or if it is an AT&T problem. Anyone had this happen before? Any suggestions? My next step will probably be to call AT&T and see if they can ensure my connection is working correctly.