It seems to be a libdbus linking problem in cgwd/compiz. See this for further explanation : http://www.compiz.net/post-36367
-- Gnome-session-manager crashes when some dbus apps run https://launchpad.net/bugs/56583 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
