Rhythmbox Coverart Plugin Never Finds Images

Hi,

No matter which track is playing (see an example below), the coverart plugin never seems to fetch any cover art.

I don't see an error and I'm logged into last.fm via rhythmbox - I presume I'm missing a dependency or a directory under ~/.something, but what?

BTW, what causes the plugin not to search for local art or embedded art?

Regards
John

 (10:42:31) [0x8cbff40] [rb_python_module_init] rb-python-module.c:406: Init of python module
(10:42:31) [0x8cbff40] [rb_python_object_get_type] rb-python-plugin.c:274: Registering python plugin instance: ArtDisplayPlugin+RBPythonPlugin
(10:42:31) [0x8cbff40] [rb_python_module_new_object] rb-python-module.c:379: Creating object of type ArtDisplayPlugin+RBPythonPlugin
(10:42:31) [0x8cbff40] [rb_python_object_init] rb-python-plugin.c:204: Creating python plugin instance
(10:42:31) [0x8cbff40] [rb_plugin_find_file] rb-plugin.c:329: found '/usr/local/lib/rhythmbox/plugins/artdisplay/rhythmbox-missing-artwork.svg' when searching for file 'rhythmbox-missing-artwork.svg' for plugin 'artdisplay'
(10:42:31) [0x8cbff40] [LocalCoverArtSearch.search] /usr/local/lib/rhythmbox/plugins/artdisplay/LocalCoverArtSearch.py:194: not searching for local art for daap://192.168.1.160:3689/databases/1/items/4966.mp3?session-id=6
(10:42:31) [0x8cbff40] [EmbeddedCoverArtSearch.search] /usr/local/lib/rhythmbox/plugins/artdisplay/EmbeddedCoverArtSearch.py:164: not checking for embedded cover art in playing entry
(10:42:31) [0x8cbff40] [LastFMCoverArtSearch.__search_request] /usr/local/lib/rhythmbox/plugins/artdisplay/LastFMCoverArtSearch.py:137: searching for (Irene Cara, What A Feeling! 41 Feelgood Flared Hits Of The 70's & 80's , )
(10:42:31) [0x8cbff40] [LastFMCoverArtSearch.__search_request] /usr/local/lib/rhythmbox/plugins/artdisplay/LastFMCoverArtSearch.py:147: last.fm query url = http://ws.audioscrobbler.com/2.0/?method=album.getinfo&artist=Irene+Cara&album=What+A+Feeling%21+41+Feelgood+Flared+Hits+Of+The+70%27s+%26+80%27s+&api_key=ff56d530598d65c1a4088e57da7be2f9
(10:42:31) [0x8cbff40] [LastFMCoverArtSearch.__album_info_cb] /usr/local/lib/rhythmbox/plugins/artdisplay/LastFMCoverArtSearch.py:178: last.fm query returned nothing
(10:42:31) [0x8cbff40] [CoverArtDatabase.image_search] /usr/local/lib/rhythmbox/plugins/artdisplay/CoverArtDatabase.py:513: didn't find image for daap://192.168.1.160:3689/databases/1/items/4966.mp3?session-id=6