I just restartet my N9 by pressing the power-button, turning it off. Then I wanted to turn it on again -> now it freezes on the "NOKIA"-screen on bootup. It does NOT automatically reboot, it just stays there. Can be turned off though. It is a black 64GB-Version.
The number inside the SIM-Card-tray is 059J1V4 - if that helps. And I have PR 1.3 installed.

Any ideas?

edit:
I managed to reflash it, seems to be fine. Some icons are doubled now though..