It's hard to believe that 43 people have gotten keys but not registered yet. But I guess that statistically, that's probably not all that outlandish of a number.
With random keys thrown out to mails I'm surprised its not more then 43 out of 300 generally you lose like 25% of keys to the void
I know that "that's life" and all, but that has to be a kick in the nuts to those still waiting for a key.
As long as they have that kind of numbers, they could just give out those keys to "active people" that can guarantee some kind of beta-testing Like doing another forum contest to "claim the lost 43 keys"