I'm having serious issues on my 920.
When installation was complete, the device rebooted, asked for my SIM pin, then crashed. Device went off, and I had to restart. Upon restart, SIM pin was not asked for and consequently I can't make calls in or out. The "no SIM" icon is active in the notification bar, and despite multiple resets (Not a hard reset...yet) the device doesn't ask for the pin, and I can't access the phone. When I touch the phone app icon, the app sends me back to the homescreen.
Also, none of my accounts (MS, Google, Yahoo) work in the "People" app. I have "Attention required" for all three, and despite checking the password and hitting "Sync", that doesn't change. None of my contacts have pictures.
Messaging crashes and sends me back to homescreen - every time.
I will trawl the forums to see if anyone else has similiar issues, but anyone with ideas or similiar issues please post.