As I posted in another thread.. just got my N900 Friday afternoon. Been busy getting used to it and everything setup, installing apps etc. So far I can definitely say 2 things...

1. No problems at all. Yes, the mic works, totally stable, very fast.
2. In a nutshell, the most amazing piece of technology I've ever held in my hand.

IOW, I'm both very happy and totally rocked. The N900 is one cool tool. Makes an iPhone/OS-X or an Android phone look like toys for boys.

Congratulations and many thanks to the Maemo community and Nokia for a truly revolutionary product.