I had a 1G jailbroken with 2.0.2,2.1,2.2. And now I have a 2G jailbroken with 2.2.1. And on the 1G, Customize worked fine on 2.0.2 and 2.1 but on 2.2 it launches but can't download any theme with the error: "No internet connection has been found". But my wifi is on and working on safari,cydia,installer and other internet apps. On the 2G it doesn't even want to edit strings. When I tap on Edit Strings it's white and nothing can be done.Is this happening to you as well?