I am a new iPad 2 owner. I have a 3G iPad and tried it for the first time today. Is it typical for the number of bars to change even if I haven't changed locations? I have been using the service from work and started this morning with 4 bars. I now have 3 and there were a couple of times during the day I noticed it went down to 2 for short periods of time. I also had some very slow spots on my commute this morning when we must have gone through areas where no 3G service was available (I got a small o on the screen). I guess this is nothing out of the ordinary, but I'm keeping my eye on how often this happens.