Problem when upgrading from 2.2.1 to 2.2.2
I upgraded my box from 2.2.1 to 2.2.2 on Friday (using the auto-updater). The installed crashed, showing the error message in the attachment.
The installation was left for 30-40 minutes after the first reboot until I killed it (no display connected before the upgrade -> no image when connecting a monitor)
When I connected up a monitor and a keyboard, I saw the error message.
I tried various modes (recovery, single user) but no difference.
I ended up having to do a fresh installation and just restore my config file as I did not have time to fiddle around with it and attempt to recover the log/fix the problem.