Bug#663027: Installing at-api2 prevents gdm3

[ciel]

Package: gdm3
Version: 3.0.4-4
Severity: important

Yesterday I updated gnome-orca. It replaced at-spi with at-spi2.
Today I restarted this computer then gdm3 freezes when I type keyboard
(for inputting password).
I consulted /var/log/gdm3/:0-greeter.log and saw:
---
gnome-session[29907]: WARNING: Failed to start app: Unable to start application:
 Failed to execute child process "/usr/lib/at-spi/at-spi-registryd" (No such fil
e or directory)

** (gnome-settings-daemon:29962): WARNING **: Connection failed, reconnecting...

** (gnome-settings-daemon:29962): WARNING **: Failed to connect
context: Connection refused
---
So I tried to re-installing at-spi (with removing gnome-orca) and gdm3
is working as before...

Maybe /usr/share/gdm/autostart/LoginWindow/at-spi-registryd-wrapper.desktop
stuff?

Sincerely, ciel.