I apt-got upgraded today and it broke everything, Xorg runs but uses 100% cpu and the entire screen is redrawn 1 pixel at a time and manages about 3 pixels a second. Totally unusable anyway.
I've tried again on a different image and I am at the point where I have to reboot to see if it worked this time or not, the upgrade ended with the following message and an information box telling me how it has overwritten all my settings except for the few it just deleted.
** (zenity:21698): WARNING **: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files
Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
I'm pretty discouraged too.