Without knowinhg the bugs you're referring to it's impossible for me to give any answer beyond "Maemo 5 will have updates". Please ask in those bugs adding me to the CC or link them here. Thanks!

To rjzak, this has been discussed and all goes down to the mistake of comparing a stable x86 architecture for the more stable category of laptop/PC with the fast evolving OMAP architecture and mobile devices. This time the hurdle is the jump from resistive to capacitive sceen, from single touch to multitouch. In principle this is technically easier to bridge than an OMAP incompatible jump.

As said before several time, this debate is too especulative for my taste before a first Harmattan release showing what are the UI changes. In principle most middleware don't have big issues jumping to/from Maemo 5/6.

At the end the equation today is simple: if you like the N900 and you have the money, buy it. If not, look for something else, now or in the future, from Maemo or from someone else. I'm confident that if you are reading these lines now you are going to be happy with Maemo.