Apple sells 1 million iPhone 3Gs over the weekend, 10 million apps downloaded
appleiphoneapps.com
appleiphoneapps.com
-- Wikipedia dix it
It is still a truly astounding number but I'm not sure it warrants the tech blog super soak it's getting. I would venture to guess that Apple's internal estimates were higher than 1 million and that the activation difficulties hurt them plenty. Regardless, it'll still be selling like crazy for quite a while...
As for gen1 iPhone sales, I couldn't find anything concrete either. I've read numbers ranging from 200k to 700k.