on https://wiki.ubuntu.com/Backtrace you have a "Already running programs" with instructions on how to get the backtrace for the application. Do you use the daap plugin in rhythmbox?
-- [feisty] rhythmbox hangs between songs when not connected to the internet https://launchpad.net/bugs/96153 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs