I just upgraded my first gen iPhone to 2.1. Then, I promptly jailbroke it with the latest version of QuickPwn. I love how easy that process has become. Even the process of re-flashing the device now has a graphical UI on the phone itself. What will these hackers think of next? =) All-in-all, the new version seems like a lot of bugs were fixed and it is running much faster/smoother now. Thanks Apple.