Lack of Multi-touch is something that I always missed in N900. I mean Zooming images using buttons is impractical. Then zooming in default browser is bit OK. But if you do zooming in mozilla or any other browser, you don't know what to do. It would have been really better if they would have added multi-touch, zooming would have been pretty much handy.

N900 has an excellent H/W but I would say its sofware is unable to get the best out of it for example

1) Low sound from the speakers, although I believe speakers are excellent its the software thats limiting it
2) Front Camera is good but when I use it in mirror application or skype calling its so dark that hardly anything is visible under normal light condition