Gwibber service hangs if an avatar isn't obtained

Gwibber service hangs if an avatar is failed to be grabbed see trace below:

davmor2@davmor2-HP-G62-Notebook-PC:~$ killall -9 gwibber-service; gwibber-service -do

(gwibber-service:5907): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

(gwibber-service:5907): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

(gwibber-service:5907): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

(gwibber-service:5907): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
Loading plugin Facebook version 1.1
Loading plugin Identi.ca version 1.1
Loading plugin Twitter version 1.0
Twitter : DEBUG Setting up monitors
Twitter : DEBUG NM Version is 0.8.9997
Twitter : DEBUG NM Version is greater than 0.8.997

(gwibber-service:5907): libindicate-WARNING **: Menu being changed when the indicator is visible. Listeners will NOT be notified of this change.
Twitter : DEBUG Refresh interval is set to 5
Twitter : DEBUG ** Starting Refresh - 2011-08-17 16:34:13.12 **
Twitter : DEBUG <twitter:receive> Performing operation
Twitter : DEBUG <twitter:responses> Performing operation
Twitter : DEBUG <twitter:lists> Performing operation
Twitter : DEBUG <twitter:private> Performing operation
Twitter : DEBUG <twitter:responses> Adding record
Twitter : DEBUG <twitter:responses> Finished operation
Twitter : DEBUG <facebook:receive> Performing operation
Twitter : DEBUG <twitter:lists> Finished operation
Twitter : DEBUG <twitter:user_messages> Performing operation
Twitter : DEBUG <twitter:private> Finished operation
Twitter : DEBUG <twitter:receive> Adding record
Twitter : DEBUG <twitter:receive> Adding record
Twitter : DEBUG <twitter:receive> Adding record
Twitter : DEBUG <twitter:receive> Adding record
Twitter : DEBUG <twitter:receive> Adding record
Twitter : DEBUG <twitter:receive> Adding record
Twitter : DEBUG <twitter:receive> Adding record
Twitter : DEBUG <twitter:receive> Adding record
Twitter : DEBUG <twitter:receive> Adding record
Twitter : DEBUG <twitter:receive> Finished operation
Twitter : DEBUG <STATS> facebook:receive account:339dc4ccbc3611e09af0889ffa4fd964 since:2011-08-17 15:58:40.00 size:49196
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Adding record
Twitter : DEBUG <facebook:receive> Finished operation
Twitter : DEBUG <twitter:user_messages> Finished operation
Twitter : DEBUG Private Messages Indicator count updated to 0
Twitter : DEBUG Replies Indicator count updated to 1
Twitter : DEBUG Messages Indicator count updated to 8
Twitter : DEBUG 103843695505309697 - show_notifications is true and notify_mentions_only is false
Twitter : DEBUG 103843109925961728 - show_notifications is true and notify_mentions_only is false
Twitter : DEBUG 103831035502014464 - show_notifications is true and notify_mentions_only is false
Twitter : DEBUG 103845334773538816 - show_notifications is true and notify_mentions_only is false
Twitter : DEBUG 103845736126492672 - show_notifications is true and notify_mentions_only is false
Twitter : DEBUG 103843674353442816 - show_notifications is true and notify_mentions_only is false
Twitter : DEBUG 103848888762499074 - show_notifications is true and notify_mentions_only is false
Twitter : DEBUG 103850440126496768 - show_notifications is true and notify_mentions_only is false
Twitter : DEBUG 103850175184904192 - show_notifications is true and notify_mentions_only is false
Twitter : DEBUG Downloading avatar http://a2.twimg.com/profile_images/1481767616/TAACgrab2_normal.jpg
Exception in thread Thread-3:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 505, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib/python2.7/multiprocessing/pool.py", line 365, in _handle_results
    cache[job]._set(i, obj)
  File "/usr/lib/python2.7/multiprocessing/pool.py", line 562, in _set
    self._callback(self._value)
  File "/usr/lib/pymodules/python2.7/gwibber/microblog/dispatcher.py", line 714, in loading_complete
    self.send_error_notify(error[1])
  File "/usr/lib/pymodules/python2.7/gwibber/microblog/dispatcher.py", line 648, in send_error_notify
    if self.notified_errors.has_key(error["account"]["service"]):
TypeError: string indices must be integers

Twitter : DEBUG Downloading avatar http://a0.twimg.com/profile_images/18981962/icon_normal.png
Twitter : DEBUG Downloading avatar http://a3.twimg.com/profile_images/1375606717/podcast_5_3_normal.jpg
Twitter : DEBUG Downloading avatar http://a1.twimg.com/profile_images/586317518/lens_normal.jpg

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: gwibber 3.1.4.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-8.11-generic 3.0.1
Uname: Linux 3.0.0-8-generic x86_64
Architecture: amd64
Date: Wed Aug 17 17:10:10 2011
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110731)
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: gwibber
UpgradeStatus: No upgrade log present (probably fresh install)