Walt reviewed the nook way before the significant firmware updates came out that addressed early complaints. Reviewers typically don't get to keep review units that companies send to them, so I'm sure his review unit was gone long before those updates came out.
I actually own a nook and several of the other ebook readers. That's why I update our nook review from time to time when new features come out. The same goes for our IREX review and I still need to get around to updating the Kindle 2 review to mention the new features .