Well, initially this was a long reply, but I was getting kind of off-topic, so I'm going to summarize.

a) Harmattan might or might not be OK for N900. Might be slow, lose some app base, whatnot. I have no idea what it would be like exactly, but it's a major version change and we all know what guarantees major versions bring. As a result, I feel fixes and improvements should be brought to M5 as well as M6. Shouldn't be all that hard, if codebase is derived it's not impossible, especially UI improvements and stuff like searching in lists, filtering history and whatnot.

I see you're optimistic, and sure hope you are right about the M5. Maybe this will be different, I've had some poor experiences.

b) I know bugzilla will never be empty, I'm a coder myself, and approaching my second decade as one. What I mean was Bugzilla as it is now (or when M5 was released) should be empty. That is, fix stuff that should be there in a phone, bring the phone app to S60 standards, bring multimedia to the level where it handles 30GB of data, etc

And yes, I do scan bugzilla periodically and I saw the list of bugs and the list of fixed bugs, I and assume more are internal. I never said they aren't DOING it, on the contrary, I'm impressed this far. I'm just worried about it slowing too much after M6 is out.

I don't understand what you completely disagree with. My choice of examples, XP and 7? I picked a well supported OS while a much newer is being actively developed.

On a relatively unrelated note, the free upgrade wasn't from the goodness of their heart, it was because announcing 7 while Vista stinked meant that embedded systems sales as well as OEM licenses would slump because people would hold out for W7. So basically what they did is allow Vista temporarily so people would keep buying. it wasn't free upgrade, it was pre-ordering. You still paid for W7, only you got it way after.