I've been speaking to AT&T reps for days now about this issue, and today one of them told me something different which hasn't been considered on these forums. It's probably nothing, but for those of you who are having really slow/spotty 3G browsing speeds even with 5 full bars of 3G, did you guys restore your iPhone 4 from a back up or did you set it up as a new iPhone? i don't know if there is any kind of relation between this and the issue, but it doesn't hurt to speculate. I myself have restored from a backup and I am experiencing this issue hardcore. The AT&T rep recommended that I restore the phone and set it up as a new iPhone. Is anyone who set up as a new phone also having this issue?