Here's a backtrace from rhythmbox rebuild with DEB_BUILD_OPTIONS="noopt,debug,nostrip": /tmp$ gdb rhythmbox GNU gdb 6.8-debian Copyright (C) 2008 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i486-linux-gnu"... (gdb) run Starting program: /usr/bin/rhythmbox [Thread debugging using libthread_db enabled] [New Thread 0xb657c720 (LWP 14268)] [New Thread 0xb61edb90 (LWP 14288)] [Thread 0xb61edb90 (LWP 14288) exited] [New Thread 0xb61edb90 (LWP 14293)] (rhythmbox:14268): Gtk-WARNING **: AudioCdSourcePopupCopyCd: missing action MusicAudioCDDuplicate (rhythmbox:14268): Gtk-WARNING **: AudioCdSourcePopupCopyCd: missing action MusicAudioCDDuplicate [Thread 0xb61edb90 (LWP 14293) exited] [New Thread 0xb61edb90 (LWP 14298)] [Thread 0xb61edb90 (LWP 14298) exited] [New Thread 0xb61edb90 (LWP 14299)] [New Thread 0xb4f18b90 (LWP 14300)] [Thread 0xb61edb90 (LWP 14299) exited] [New Thread 0xb61edb90 (LWP 14305)] [New Thread 0xb46feb90 (LWP 14306)] [New Thread 0xb3efdb90 (LWP 14307)] [Thread 0xb61edb90 (LWP 14305) exited] [Thread 0xb3efdb90 (LWP 14307) exited] [New Thread 0xb61edb90 (LWP 14312)] [New Thread 0xb3efdb90 (LWP 14313)] [Thread 0xb61edb90 (LWP 14312) exited] [Thread 0xb3efdb90 (LWP 14313) exited] [Thread 0xb46feb90 (LWP 14306) exited] [New Thread 0xb46feb90 (LWP 14318)] (rhythmbox:14268): GLib-GIO-CRITICAL **: g_file_info_get_name: assertion `G_IS_FILE_INFO (info)' failed (rhythmbox:14268): GLib-GIO-CRITICAL **: g_file_get_child: assertion `name != NULL' failed (rhythmbox:14268): GLib-GIO-CRITICAL **: g_file_get_uri: assertion `G_IS_FILE (file)' failed Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0xb4f18b90 (LWP 14300)] 0xb6f7ed07 in g_str_hash () from /usr/lib/libglib-2.0.so.0 (gdb) bt #0 0xb6f7ed07 in g_str_hash () from /usr/lib/libglib-2.0.so.0 #1 0xb6f4de87 in g_hash_table_lookup () from /usr/lib/libglib-2.0.so.0 #2 0xb7fe04c7 in rb_refstring_new (init=0x0) at rb-refstring.c:75 #3 0xb7fe6e54 in rhythmdb_execute_enum_dir (db=0x9c790b8, action=0xa4feaa8) at rhythmdb.c:2575 #4 0xb7fe7542 in action_thread_main (db=0x9c790b8) at rhythmdb.c:2723 #5 0xb6f8602f in ?? () from /usr/lib/libglib-2.0.so.0 #6 0xb7e1350f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0 #7 0xb6e3c7ee in clone () from /lib/tls/i686/cmov/libc.so.6 (gdb) bt full #0 0xb6f7ed07 in g_str_hash () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #1 0xb6f4de87 in g_hash_table_lookup () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #2 0xb7fe04c7 in rb_refstring_new (init=0x0) at rb-refstring.c:75 ret = (RBRefString *) 0xa4a9ba8 #3 0xb7fe6e54 in rhythmdb_execute_enum_dir (db=0x9c790b8, action=0xa4feaa8) at rhythmdb.c:2575 result = (RhythmDBEvent *) 0xa4e7988 file_info = (GFileInfo *) 0x0 child = (GFile *) 0x0 child_uri = 0x0 dir = (GFile *) 0xa4bc400 dir_enum = (GFileEnumerator *) 0xa4e7df0 error = (GError *) 0xa4de570 __FUNCTION__ = "rhythmdb_execute_enum_dir" #4 0xb7fe7542 in action_thread_main (db=0x9c790b8) at rhythmdb.c:2723 action = (RhythmDBAction *) 0xa4feaa8 result = (RhythmDBEvent *) 0xa4e7df0 __FUNCTION__ = "action_thread_main" __PRETTY_FUNCTION__ = "action_thread_main" #5 0xb6f8602f in ?? () from /usr/lib/libglib-2.0.so.0 No symbol table info available. ---Type to continue, or q to quit--- #6 0xb7e1350f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0 No symbol table info available. #7 0xb6e3c7ee in clone () from /lib/tls/i686/cmov/libc.so.6 No symbol table info available. (gdb) thread apply all bt full Thread 12 (Thread 0xb46feb90 (LWP 14318)): #0 0xb8060430 in __kernel_vsyscall () No symbol table info available. #1 0xb7e173a2 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0 No symbol table info available. #2 0xb71200bd in ?? () from /usr/lib/libgthread-2.0.so.0 No symbol table info available. #3 0xb6f35269 in ?? () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #4 0xb6f87708 in ?? () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #5 0xb6f8602f in ?? () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #6 0xb7e1350f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0 No symbol table info available. #7 0xb6e3c7ee in clone () from /lib/tls/i686/cmov/libc.so.6 No symbol table info available. Thread 6 (Thread 0xb4f18b90 (LWP 14300)): #0 0xb6f7ed07 in g_str_hash () from /usr/lib/libglib-2.0.so.0 No symbol table info available. ---Type to continue, or q to quit--- #1 0xb6f4de87 in g_hash_table_lookup () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #2 0xb7fe04c7 in rb_refstring_new (init=0x0) at rb-refstring.c:75 ret = (RBRefString *) 0xa4a9ba8 #3 0xb7fe6e54 in rhythmdb_execute_enum_dir (db=0x9c790b8, action=0xa4feaa8) at rhythmdb.c:2575 result = (RhythmDBEvent *) 0xa4e7988 file_info = (GFileInfo *) 0x0 child = (GFile *) 0x0 child_uri = 0x0 dir = (GFile *) 0xa4bc400 dir_enum = (GFileEnumerator *) 0xa4e7df0 error = (GError *) 0xa4de570 __FUNCTION__ = "rhythmdb_execute_enum_dir" #4 0xb7fe7542 in action_thread_main (db=0x9c790b8) at rhythmdb.c:2723 action = (RhythmDBAction *) 0xa4feaa8 result = (RhythmDBEvent *) 0xa4e7df0 __FUNCTION__ = "action_thread_main" __PRETTY_FUNCTION__ = "action_thread_main" #5 0xb6f8602f in ?? () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #6 0xb7e1350f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0 No symbol table info available. ---Type to continue, or q to quit--- #7 0xb6e3c7ee in clone () from /lib/tls/i686/cmov/libc.so.6 No symbol table info available. Thread 1 (Thread 0xb657c720 (LWP 14268)): #0 0xb8060430 in __kernel_vsyscall () No symbol table info available. #1 0xb6e31f77 in poll () from /lib/tls/i686/cmov/libc.so.6 No symbol table info available. #2 0xb6f5ec32 in ?? () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #3 0xb6f5f2c2 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #4 0xb764c3a9 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0 No symbol table info available. #5 0x08064669 in main (argc=Cannot access memory at address 0x0 ) at main.c:330 _save = (PyThreadState *) 0x9c7dd60 program = (GnomeProgram *) 0x99ecc58 session_bus = (DBusGConnection *) 0x9ad2a44 error = (GError *) 0x0 rb_shell = (RBShell *) 0x9b08060 new_argv = (char **) 0x99d8600 activated = 0 context = (GOptionContext *) 0x99d7a98 ---Type to continue, or q to quit--- options = {{long_name = 0x80d4185 "debug", short_name = 100 'd', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x80f0ca8, description = 0x80d418b "Enable debug output", arg_description = 0x0}, { long_name = 0x80d419f "debug-match", short_name = 68 'D', flags = 0, arg = G_OPTION_ARG_STRING, arg_data = 0x80f0cac, description = 0x80d41ac "Enable debug output matching a specified string", arg_description = 0x0}, {long_name = 0x80d41dc "no-update", short_name = 0 '\0', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x80f0cb8, description = 0x80d41e8 "Do not update the library with file changes", arg_description = 0x0}, {long_name = 0x80d4214 "no-registration", short_name = 110 'n', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x80f0cb4, description = 0x80d4224 "Do not register the shell", arg_description = 0x0}, {long_name = 0x80d423e "dry-run", short_name = 0 '\0', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x80f0cbc, description = 0x80d4248 "Don't save any data permanently (implies --no-registration)", arg_description = 0x0}, {long_name = 0x80d4284 "rhythmdb-file", short_name = 0 '\0', flags = 0, arg = G_OPTION_ARG_STRING, arg_data = 0x80f0cc0, description = 0x80d4292 "Path for database file to use", arg_description = 0x0}, {long_name = 0x80d42b0 "playlists-file", short_name = 0 '\0', flags = 0, arg = G_OPTION_ARG_STRING, ---Type to continue, or q to quit--- arg_data = 0x80f0cc4, description = 0x80d42c0 "Path for playlists file to use", arg_description = 0x0}, {long_name = 0x80d42df "quit", short_name = 113 'q', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x80f0cb0, description = 0x80d42e4 "Quit Rhythmbox", arg_description = 0x0}, {long_name = 0x80d42f3 "", short_name = 0 '\0', flags = 0, arg = G_OPTION_ARG_STRING_ARRAY, arg_data = 0x80f0cc8, description = 0x0, arg_description = 0x80d42f4 "[URI...]"}, { long_name = 0x0, short_name = 0 '\0', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x0, description = 0x0, arg_description = 0x0}} __FUNCTION__ = "main" #0 0xb6f7ed07 in g_str_hash () from /usr/lib/libglib-2.0.so.0 (gdb)