You wait for the text to appear after typing, sometimes several seconds. As whiz-bang a toy as it is, the Newt still feels like Version 1. Apple's own software is lacking and some vendors release slow, buggy, unstable hacks that sometimes are the best thing going. Many 'companies' producing for the Newt are probably, truth be told, individuals mainlining caffeine after work, unable to quit their day jobs. The Newt market has attracted no Adobe's.
Programmers suffer low return for effort.
Users will suffer ineptitude for a few years. This is the bleeding edge. The first Newt provided great fodder for jokes, Doonesbury, et al. People complain that the Newt is unwieldy and want a smaller one. Sharp's sweet little Pilot made people doubly envious since it drops into a shirt-pocket and syncs with the desktop in one motion.