Comment 9 for bug 938667

after preparing package sources as defined in https://wiki.ubuntu.com/Testing/EnableProposed :
stefan@***:~$ sudo aptitude remove gwibber
The following packages will be REMOVED:
  gwibber
0 packages upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
Need to get 0 B of archives. After unpacking 809 kB will be freed.
(Reading database ... 268833 files and directories currently installed.)
Removing gwibber ...
Processing triggers for hicolor-icon-theme ...
Processing triggers for desktop-file-utils ...
Processing triggers for gnome-menus ...
Processing triggers for bamfdaemon ...
Rebuilding /usr/share/applications/bamf.index...

stefan@***:~$ sudo aptitude install gwibber/precise-proposed
Unable to find an archive "precise-proposed" for the package "gwibber"
Unable to find an archive "precise-proposed" for the package "gwibber"
The following NEW packages will be installed:
  gwibber
0 packages upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/156 kB of archives. After unpacking 809 kB will be used.
Selecting previously unselected package gwibber.
(Reading database ... 268741 files and directories currently installed.)
Unpacking gwibber (from .../gwibber_3.4.1-0ubuntu1_i386.deb) ...
Processing triggers for desktop-file-utils ...
Processing triggers for gnome-menus ...
Processing triggers for bamfdaemon ...
Rebuilding /usr/share/applications/bamf.index...
Processing triggers for hicolor-icon-theme ...
Setting up gwibber (3.4.1-0ubuntu1) ...

During Facebook authorization i got:
...
(gwibber:10040): GLib-GObject-WARNING **: g_object_set_property: object class `GwibberAccount' has no property named `uid'
Traceback (most recent call last):
  File "/usr/share/gwibber/plugins/facebook/gtk/facebook/__init__.py", line 171, in on_facebook_auth_title_change
    self.ui.get_object("fb_auth_done_label").set_label(_("%s has been authorized by Facebook") % str(self.account["username"]))
UnicodeEncodeError: 'ascii' codec can't encode character u'\u0160' in position 0: ordinal not in range(128)

Unfortunately it doesn't seem fixed yet.