I very recently bought a panp9. The spacebar is a lot less effective in its lower half, leading to a bad typing experience.
This guy  had the same problem in 2010 and here's an entry in launchpad  dated in the same year.
The customer care asked him to press the spacebar in the center  but they finally replaced his keyboard.
This week I've addressed the very same issue to the customer care and they've asked me to press the spacebar in the center..
Now.. it looks like they're aware of the issue (since 2 years ago, at least) and they're trying to fool customers into thinking its not a big deal.
Moreover I'm in Italy and they said that I'll be charged ~ $48 for the international shipping of the new keyboard and that I have to ship my faulty keyboard to them (another $48?).
And I'm not considering customs bills..
Since it's not even a month that I've received the notebook, I'd expect to replace the keyboard without paying anything.