Nano Not Slow
Ranked #2 (black) and #3 (white) on Amazon.com
By the way, 7 of top 20 items are iPods. 13 of top 50 are ipods. Apple has far exceeded critical mass; they now control the preferred platform (iTunes), they have a lock on the memory market (at huge discounts no competitor can touch), and They don't have any "real" competitors.
Sony just cut 10,000 jobs. That may help their finances, but it won't help their R&D. No one else is even positioned to make a dent in this market - nevermind challenge Apple.
in 1-3 years you will see Apple plow their horde of cash into video, gaming, telephony, and probably a half-dozen things we've never thought of... all using the iPod/iTunes platform and untouchable Apple style and design.
So why perpetuate the rumor that nano sales are slow? BestBuy: sold out. Circuit City: sold out. CompUSA: sold out. Nano sales are not slow, and they will never be slow. They will continue to skyrocket. Apple will make an absolute killing through the holidays. Post-holidays, millions of users will pay a buck-a-song on their new iPods... and Apple will do to music and music players what Microsoft did to data and computers 25 years ago.
And way back then, some dumb schmuck probably once claimed "Windows sales are slow."