You can get the dbgsym package by following the instructions on http://wiki.ubuntu.com/DebuggingProgramCrash. Could you try to get a valgrind log for the crash? (you can follow the instructions from https://wiki.ubuntu.com/Valgrind for that)
-- Gnome Audio Preference crash when testing sound capture https://launchpad.net/bugs/69592 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
