It was when Nokia decided to take the entire OS/software portfolio in their own hands it started to go down. The Maemo/Symbian roadmap looked nice on paper, but without teams lead by seasoned and absolute top OS architect and programmers, like the ones found at Google and Apple, well the whole roadmap was nothing more than wishful thinking with no base in reality. It is not before Nokia Belle that Symbian finally is almost on the same level as Android was 3-4 years ago regarding UX.