Desktop failing to start today due to glib2.0 update

[Bryce Harrington]

Jono and jcastro brought to our attention today a rather nasty bug that
we expect most users who update oneiric today will hit, which causes the
GNOME session to fail.  X then exits normally but you're left at the
console (or a black screen).

The problem was traced to the glib2.0 update to 2.29.16 from today.

As a workaround, if you downgrade to the previous glib2.0, the desktop
starts up properly (confirmed by Sarvatt, myself, and jcastro).

You may find the old glib2.0 debs in /var/cache/apt/, or from launchpad:

 https://launchpad.net/ubuntu/+source/glib2.0/2.29.14-0ubuntu1/+build/2644912
 https://launchpad.net/ubuntu/+source/glib2.0/2.29.14-0ubuntu1/+build/2644910

Bryce