I've just been trying my Phonegap/jQM app on Android (2.2 - Samsung Galaxy S) for the first time and wanted to mention a couple of things.

The Slide transition is not usable as pages blink on and off as they arrive. Changing the transition to "none" gets around this and so it's not a big problem. 

The text in the header buttons does not centre vertically. The "Back" in back button sits too high

The performance is great. Have been building to iPhone 3GS so the extra power of a newer Android makes all the difference

Thanks