So I just bought my son a used iPad1 for Christmas. It was still running 4.2.1. I was doing some reading about Jailbreaking, but think I am not going to worry about that since I have enough things to do to spend any time on that. Anyway, while reading up on that I saw quite a few threads on various forums talking about how iOS 5.01 slowed down people's iPad1s considerably. I have also read where people haven't had any issues. Is there a particular way to upgrade one to not have any problems?