How come the N900/Maemo (which is already at it's 5th release) doesn't even come close to the functionality of the Psion 5MX 10 years ago...It had a terrific keyboard, a very good document writer and spreadsheat app. It ran the Opera webbrowser. It had an excellent calendar. It had a good e-mail client. There were plenty of good apps for the device..

http://www.youtube.com/watch?v=Bh1uBRH6n8E

So looking at it from a purely user and software perspective Maemo isn't that modern - as compared to what the Psion 5MX had to offer TEN years ago.