I remember very well what iOS 4 did to my iPhone 3G. The 3G became borderline unusable with its terrible lag and constant freezing of various apps (with Maps being the worst) which forced me to upgrade to the iPhone 4 before my 2 year contract was up. Now that iOS 5 is coming out, I hope the iPhone 4 is better equipped to run it. If iOS 5 ends up slowing down my iPhone 4, I will not be a happy camper. So for people who have played with iOS 5 on their iPhone 4, how does it run compared to iOS 4.X? Do you see any lag or slow downs of particular apps like maps? TIA for your inputs!