Yes.

No, except that it took ages (3+ hrs ) for iTunes to create the new iPad OS auto backup files on my PC. One OS 4.2 annoyance is tthat he screen rotation lock (physical) switch function has been changed to activate vol mute. Screen lock must now be activated within the touch screen. That said, a worthwhile upgrade to gain the ability to run multiple apps concurrently, and of course, midi support. . - Scott