I too am seeing this error. This happens every time Banshee tries to scrobble a track.
** Attachment added: "Crash Log from Incandescant" http://librarian.launchpad.net/5805742/banshee-crash-log.txt -- Audioscrobbler plugin error https://launchpad.net/bugs/77355 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs