SO there is a cell site owned by att right behind my house... I always get 5 bars of 3G signal. With my new 3G iPhone I only get one bar of 3G service.
Now heres the cool part. As soon as I disable 3G my phone gets full signal/5 bars on edge. Its been like this all day. I actually went within 10 ft of the cell site and got 2 bars..
Personally, I have experienced major issues with reception as well. These include dropped calls, poor reception, and missed calls in areas that used to pose no problem.