Ok, I'll comment I've had to re-soldier the cables to the connector a couple times now, this last time it was actually strange as connectivity seem ok, and it detected being charging but after a while it just said "Not charging" and that was all... I hope with the last re-soldiering it will live some more time, but I think this could be related to the removed component in my first attempt to repair.
The point is I guess My N900 won't actually last a lot from now on, and that makes me a little sad. F#c#k Nokia, If there was an actual replacement for N900 It wouldn't be so difficult to get something newer with Maemo (and keep with community)... but no choice so far.