Ok, rejected as this is caused by the dbus backport you have installed... please revert to the official Ubuntu packages of everything and everything will work again.
** Changed in: banshee (Ubuntu) Status: Unconfirmed => Rejected -- Banshee problems with mono and dbus-sharp https://launchpad.net/bugs/60629 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs