Last.fm applet is skipping songs or failing

Could you upload a screenshot of what you mean, please? I don't quite understand

Well, I click on a radio station, say, songs tagged with "rock", and it will always skip the first song of the stream.
Look: http://imageshack.us/photo/my-images/707/lastfmk.png/
See it went directly to the second song. And sometimes, when I click "next", it will stop playing the songs, saying it needs a HTML/Text decoder in order to function properly.

I am not sure what causes this but this always happens when I try to use the Last.FM plugin..

So, I ran Banshee on a terminal, used Last.Fm and here's the output:

gustavo@gustavo-Dell-System-XPS-L502X:~$ banshee
[Info 13:49:21.749] Running Banshee 2.2.1: [Ubuntu 11.10 (linux-gnu, x86_64) @ 2011-11-18 20:41:53 UTC]

(Banshee:4609): Gtk-WARNING **: Não foi possível localizar a ferramenta de temas no module_path: "pixmap",

(Banshee:4609): Gtk-WARNING **: Não foi possível localizar a ferramenta de temas no module_path: "pixmap",

(Banshee:4609): Gtk-WARNING **: Não foi possível localizar a ferramenta de temas no module_path: "pixmap",

(Banshee:4609): Gtk-WARNING **: Não foi possível localizar a ferramenta de temas no module_path: "pixmap",
[Info 13:49:22.885] Updating web proxy from GConf
[Info 13:49:22.921] All services are started 0,959344
[Info 13:49:23.547] AmazonMP3 store redirect URL: http://integrated-services.banshee.fm/amz/redirect.do/
** (Banshee:4609): DEBUG: SyncDaemon already running, initializing SyncdaemonDaemon object

(Banshee:4609): libsoup-WARNING **: No feature manager for feature of type 'U1RequestChrome'
[Info 13:49:24.386] nereid Client Started
[Info 13:49:24.504] GStreamer version 0.10.35.0, gapless: True, replaygain: False
[Info 13:49:24.541] AppleDeviceSource is ignoring unmounted volume OS

** (Banshee:4609): WARNING **: Error calling get_info: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/dbus/service.py", line 702, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/platform/linux/dbus_interface.py", line 1041, in get_info
    return self.syncdaemon_folders.get_info(path)
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/interaction_interfaces.py", line 640, in get_info
    mdobj = self.fs.get_by_path(path.encode('utf-8'))
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/filesystem_manager.py", line 781, in get_by_path
    mdid = self._idx_path[path]
KeyError: '/home/gustavo/.ubuntuone/Purchased from Ubuntu One'

** (Banshee:4609): CRITICAL **: syncdaemon_folder_info_get_subscribed: assertion `SYNCDAEMON_IS_FOLDER_INFO (finfo)' failed
** (Banshee:4609): DEBUG: Loading the real store page

** (Banshee:4609): WARNING **: Error rescanning Purchased Music: Arquivo ou diretório não encontrado
[Warn 13:53:06.360] Audioscrobbler upload failed - The request timed out and was aborted
[Warn 13:53:06.370] Failed to get the request stream - System.Net.WebException: Aborted. (in `System')
  at System.Net.HttpWebRequest.EndGetRequestStream (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0
  at Lastfm.AudioscrobblerConnection.TransmitGetRequestStream (IAsyncResult ar) [0x00000] in <filename unknown>:0

[0x00000] in <filename unknown>:0

(Banshee:4609): GStreamer-CRITICAL **:
Trying to dispose element playbin, but it is in PLAYING instead of the NULL state.
You need to explicitly set elements to the NULL state before
dropping the final reference, to allow them to clean up.
This problem may also be caused by a refcounting bug in the
application or some element.

GThread-ERROR **: file /build/buildd/glib2.0-2.30.0/./gthread/gt...

Reassigning to Banshee -- the Last.fm extension is in Banshee itself, not banshee-community-extensions.

I experience same problem and can generate same error message, with last.fm radio extension on Banshee 2.4, ubuntu 11.10 64bit.
Banshee crahes after a while when playing streamed songs from last.fm as described. There seem to be some similar bug reports. A fix is greatly appreciated.

Error message (identical):

(Banshee:4643): GStreamer-CRITICAL **:
Trying to dispose element playbin, but it is in PLAYING instead of the NULL state.
You need to explicitly set elements to the NULL state before
dropping the final reference, to allow them to clean up.
This problem may also be caused by a refcounting bug in the
application or some element.

GThread-ERROR **: file /build/buildd/glib2.0-2.30.0/./gthread/gthread-posix.c: line 171 (g_mutex_free_posix_impl): error 'Device or resource busy' during 'pthread_mutex_destroy ((pthread_mutex_t *) mutex)'
Trace/breakpoint trap
(EOF)

Sorry, error message is not identical. No idea how to change/remove my comment...