Also having same exact problem.
This happened also on 1.2 update, had to take the phone to Nokia Care since it just didn't wake up anymore. The fun part is, Nokia wasn't even able to provide me an phone as a exchange due the repair (reflashing) time, since they didn't (still dont?) have micro-sim phones.

Now, updating to 1.3 got me stuck on 90%, rebooted after two hours. Some red text recovery messages poppin up. Phone didn't start for a while and complaint that it should be taken to the Nokia Care. After few tries it booted up.

Now, facebook & twitter are completely f'up. Cant re-install. I dont feel that all the necessary items got even installed...