The frustration for me is the hardware is superb but the software sux (imho).

It is the reverse with Windows Mobile. I can do everything I want with existing software, but the hardware isn't "just right" for me (though some upcoming WM6 devices might be there).

I am trying to be patient because it took MS (and developers) about 10 years since Windows CE 1.0, but there is so much promise for the N800 that it becomes extra frustrating.