Sorry, I messed up above and pasted the error output twice (on top of each other). Tomboy just crashed again, so here is a new (looks very similar) error log: . . . [DEBUG 10:49:12.359] BackgroundSyncChecker: Checking server for updates [DEBUG 10:49:12.359] Building web request for URL: https://one.ubuntu.com/notes/api/1.0/ [DEBUG 10:49:14.375] Building web request for URL: https://one.ubuntu.com/notes/api/1.0/user/ [DEBUG 10:49:15.547] BackgroundSyncChecker: Detected that sync would be a good idea now [DEBUG 10:49:15.547] SyncThread using SyncServiceAddin: Tomboy Web [DEBUG 10:49:15.547] SilentUI: SyncStateChanged: Connecting [DEBUG 10:49:15.560] SilentUI: SyncStateChanged: AcquiringLock [DEBUG 10:49:15.560] Building web request for URL: https://one.ubuntu.com/notes/api/1.0/ [DEBUG 10:49:15.909] Building web request for URL: https://one.ubuntu.com/notes/api/1.0/user/ [DEBUG 10:49:17.007] 8 [DEBUG 10:49:17.008] SilentUI: SyncStateChanged: PrepareDownload [DEBUG 10:49:17.008] Sync: GetNoteUpdatesSince rev 765 [DEBUG 10:49:17.008] Building web request for URL: https://one.ubuntu.com/notes/api/1.0/op/?include_notes=true&since=765 [DEBUG 10:49:18.109] Sync: 0 updates since rev 765 [DEBUG 10:49:18.110] Building web request for URL: https://one.ubuntu.com/notes/api/1.0/op/ [DEBUG 10:49:19.535] SilentUI: SyncStateChanged: PrepareUpload [DEBUG 10:49:19.535] Saving 'Google'... [DEBUG 10:49:19.557] Saving 'Google'... *** glibc detected *** mono: double free or corruption (!prev): 0x00007f5409c611e0 *** ======= Backtrace: ========= /lib/x86_64-linux-gnu/libc.so.6(+0x78a96)[0x7f5411255a96] /lib/x86_64-linux-gnu/libc.so.6(+0x7b5db)[0x7f54112585db] /lib/x86_64-linux-gnu/libc.so.6(realloc+0xf9)[0x7f5411259ee9] /lib/x86_64-linux-gnu/libglib-2.0.so.0(g_realloc+0x31)[0x7f540e9ec751] /lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x18059)[0x7f540e9b9059] /lib/x86_64-linux-gnu/libglib-2.0.so.0(g_array_insert_vals+0x33)[0x7f540e9b9523] /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(+0x217f6f)[0x7f540e2e7f6f] /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(+0x21a4c1)[0x7f540e2ea4c1] /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_closure_invoke+0xaa)[0x7f540c3a4ffa] /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(+0x2102a)[0x7f540c3b702a] /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit_valist+0x851)[0x7f540c3c06b1] /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit+0x82)[0x7f540c3c0852] /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(gtk_list_store_set_value+0x13c)[0x7f540e20260c] [0x40104cdd] ======= Memory map: ======== 00400000-006df000 r-xp 00000000 08:03 392523 /usr/bin/mono 008df000-008e0000 r--p 002df000 08:03 392523 /usr/bin/mono 008e0000-008e9000 rw-p 002e0000 08:03 392523 /usr/bin/mono 008e9000-00923000 rw-p 00000000 00:00 0 01108000-01c28000 rw-p 00000000 00:00 0 [heap] 40029000-4002a000 rwxp 00000000 00:00 0 400b8000-400c9000 rwxp 00000000 00:00 0 40101000-40112000 rwxp 00000000 00:00 0 40288000-40299000 rwxp 00000000 00:00 0 403f9000-403fa000 rwxp 00000000 00:00 0 404c9000-404eb000 rwxp 00000000 00:00 0 40572000-40583000 rwxp 00000000 00:00 0 405c4000-405c5000 rwxp 00000000 00:00 0 406bc000-406cd000 rwxp 00000000 00:00 0 40750000-40761000 rwxp 00000000 00:00 0 4093f000-40961000 rwxp 00000000 00:00 0 40970000-40971000 rwxp 00000000 00:00 0 4098c000-4099d000 rwxp 00000000 00:00 0 409b6000-409c7000 rwxp 00000000 00:00 0 409fe000-40a0f000 rwxp 00000000 00:00 0 40a7a000-40a8b000 rwxp 00000000 00:00 0 40afc000-40afd000 rwxp 00000000 00:00 0 40b20000-40b21000 rwxp 00000000 00:00 0 40b51000-40b62000 rwxp 00000000 00:00 0 40bdf000-40bf0000 rwxp 00000000 00:00 0 40bfc000-40c0d000 rwxp 00000000 00:00 0 40cb0000-40cc1000 rwxp 00000000 00:00 0 40dbe000-40dbf000 rwxp 00000000 00:00 0 40e0c000-40e0d000 rwxp 00000000 00:00 0 40e0e000-40e1f000 rwxp 00000000 00:00 0 40e6c000-40e6d000 rwxp 00000000 00:00 0 40f16000-40f38000 rwxp 00000000 00:00 0 40f86000-40f97000 rwxp 00000000 00:00 0 40fff000-41010000 rwxp 00000000 00:00 0 410d7000-410e8000 rwxp 00000000 00:00 0 41204000-41205000 rwxp 00000000 00:00 0 4126a000-4127b000 rwxp 00000000 00:00 0 4152f000-41530000 rwxp 00000000 00:00 0 415a6000-415b7000 rwxp 00000000 00:00 0 415ff000-41610000 rwxp 00000000 00:00 0 4165b000-4166c000 rwxp 00000000 00:00 0 41762000-41773000 rwxp 00000000 00:00 0 41786000-41797000 rwxp 00000000 00:00 0 417cb000-417dc000 rwxp 00000000 00:00 0 418e8000-418fa000 rwxp 00000000 00:00 0 41b35000-41b46000 rwxp 00000000 00:00 0 41b98000-41ba9000 rwxp 00000000 00:00 0 41c27000-41c28000 rwxp 00000000 00:00 0 41cd9000-41cda000 ---p 00000000 00:00 0 41d32000-41d33000 r--p 00000000 00:00 0 41df5000-41e06000 rwxp 00000000 00:00 0 7f53ed5d2000-7f53ed5d3000 r-xp 00000000 08:03 397546 /usr/lib/libproxy/0.3.1/modules/network_networkmanager.so 7f53ed5d3000-7f53ed7d2000 ---p 00001000 08:03 397546 /usr/lib/libproxy/0.3.1/modules/network_networkmanager.so 7f53ed7d2000-7f53ed7d3000 r--p 00000000 08:03 397546 /usr/lib/libproxy/0.3.1/modules/network_networkmanager.so 7f53ed7d3000-7f53ed7d4000 rw-p 00001000 08:03 397546 /usr/lib/libproxy/0.3.1/modules/network_networkmanager.so 7f53ed7d4000-7f53ed7d5000 r-xp 00000000 08:03 395638 /usr/lib/libproxy/0.3.1/modules/ignore_domain.so 7f53ed7d5000-7f53ed9d4000 ---p 00001000 08:03 395638 /usr/lib/libproxy/0.3.1/modules/ignore_domain.so 7f53ed9d4000-7f53ed9d5000 r--p 00000000 08:03 395638 /usr/lib/libproxy/0.3.1/modules/ignore_domain.so 7f53ed9d5000-7f53ed9d6000 rw-p 00001000 08:03 395638 /usr/lib/libproxy/0.3.1/modules/ignore_domain.so 7f53ed9d6000-7f53ed9d7000 r-xp 00000000 08:03 397539 /usr/lib/libproxy/0.3.1/modules/config_wpad.so 7f53ed9d7000-7f53edbd6000 ---p 00001000 08:03 397539 /usr/lib/libproxy/0.3.1/modules/config_wpad.so 7f53edbd6000-7f53edbd7000 r--p 00000000 08:03 397539 /usr/lib/libproxy/0.3.1/modules/config_wpad.so 7f53edbd7000-7f53edbd8000 rw-p 00001000 08:03 397539 /usr/lib/libproxy/0.3.1/modules/config_wpad.so 7f53edbd8000-7f53edbef000 r-xp 00000000 08:03 393915 /usr/lib/libXmu.so.6.2.0 7f53edbef000-7f53eddef000 ---p 00017000 08:03 393915 /usr/lib/libXmu.so.6.2.0 7f53eddef000-7f53eddf0000 r--p 00017000 08:03 393915 /usr/lib/libXmu.so.6.2.0 7f53eddf0000-7f53eddf1000 rw-p 00018000 08:03 393915 /usr/lib/libXmu.so.6.2.0 7f53eddf1000-7f53eddf3000 r-xp 00000000 08:03 397536 /usr/lib/libproxy/0.3.1/modules/config_gnome.so 7f53eddf3000-7f53edff3000 ---p 00002000 08:03 397536 /usr/lib/libproxy/0.3.1/modules/config_gnome.so 7f53edff3000-7f53edff4000 r--p 00002000 08:03 397536 /usr/lib/libproxy/0.3.1/modules/config_gnome.so 7f53edff4000-7f53edff5000 rw-p 00003000 08:03 397536 /usr/lib/libproxy/0.3.1/modules/config_gnome.so 7f53edff5000-7f53edff6000 ---p 00000000 00:00 0 7f53edff6000-7f53ee1f6000 rw-p 00000000 00:00 0 7f53ee3f6000-7f53ee3f7000 r-xp 00000000 08:03 397528 /usr/lib/libproxy/0.3.1/modules/ignore_ip.so 7f53ee3f7000-7f53ee5f7000 ---p 00001000 08:03 397528 /usr/lib/libproxy/0.3.1/modules/ignore_ip.so 7f53ee5f7000-7f53ee5f8000 r--p 00001000 08:03 397528 /usr/lib/libproxy/0.3.1/modules/ignore_ip.so 7f53ee5f8000-7f53ee5f9000 rw-p 00002000 08:03 397528 /usr/lib/libproxy/0.3.1/modules/ignore_ip.so 7f53ee5f9000-7f53ee5fa000 r-xp 00000000 08:03 397531 /usr/lib/libproxy/0.3.1/modules/config_direct.so 7f53ee5fa000-7f53ee7f9000 ---p 00001000 08:03 397531 /usr/lib/libproxy/0.3.1/modules/config_direct.so 7f53ee7f9000-7f53ee7fa000 r--p 00000000 08:03 397531 /usr/lib/libproxy/0.3.1/modules/config_direct.so 7f53ee7fa000-7f53ee7fb000 rw-p 00001000 08:03 397531 /usr/lib/libproxy/0.3.1/modules/config_direct.so 7f53ee7fb000-7f53ee7fc000 r-xp 00000000 08:03 397532 /usr/lib/libproxy/0.3.1/modules/config_envvar.so 7f53ee7fc000-7f53ee9fb000 ---p 00001000 08:03 397532 /usr/lib/libproxy/0.3.1/modules/config_envvar.so 7f53ee9fb000-7f53ee9fc000 r--p 00000000 08:03 397532 /usr/lib/libproxy/0.3.1/modules/config_envvar.soStacktrace: at (wrapper managed-to-native) Gtk.ListStore.gtk_list_store_set_value (intptr,intptr,int,intptr) at Gtk.ListStore.SetValue (Gtk.TreeIter,int,GLib.Value) at Gtk.ListStore.AppendValues (System.Array) at Gtk.ListStore.AppendValues (object[]) at Tomboy.NoteRecentChanges.UpdateResults () at Tomboy.NoteRecentChanges.OnNoteSaved (Tomboy.Note) at (wrapper delegate-invoke) .invoke_void__this___Note (Tomboy.Note) at Tomboy.NoteManager.OnNoteSave (Tomboy.Note) at Tomboy.Note.Save () at Tomboy.Note.SaveTimeout (object,System.EventArgs) at Tomboy.InterruptableTimeout.TimeoutExpired () at GLib.Timeout/TimeoutProxy.Handler () at (wrapper native-to-managed) GLib.Timeout/TimeoutProxy.Handler () at (wrapper managed-to-native) Gtk.Application.gtk_main () at Gtk.Application.Run () at Tomboy.GnomeApplication.StartMainLoop () at Tomboy.Application.StartMainLoop () at Tomboy.Tomboy.StartTrayIcon () at Tomboy.Tomboy.Main (string[]) at (wrapper runtime-invoke) .runtime_invoke_void_object (object,intptr,intptr,intptr) Native stacktrace: mono() [0x4911ea] /lib/x86_64-linux-gnu/libpthread.so.0(+0x10060) [0x7f541158c060] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x35) [0x7f54112133a5] /lib/x86_64-linux-gnu/libc.so.6(abort+0x17b) [0x7f5411216b0b] /lib/x86_64-linux-gnu/libc.so.6(+0x6e113) [0x7f541124b113] /lib/x86_64-linux-gnu/libc.so.6(+0x78a96) [0x7f5411255a96] /lib/x86_64-linux-gnu/libc.so.6(+0x7b5db) [0x7f54112585db] /lib/x86_64-linux-gnu/libc.so.6(realloc+0xf9) [0x7f5411259ee9] /lib/x86_64-linux-gnu/libglib-2.0.so.0(g_realloc+0x31) [0x7f540e9ec751] /lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x18059) [0x7f540e9b9059] /lib/x86_64-linux-gnu/libglib-2.0.so.0(g_array_insert_vals+0x33) [0x7f540e9b9523] /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(+0x217f6f) [0x7f540e2e7f6f] /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(+0x21a4c1) [0x7f540e2ea4c1] /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_closure_invoke+0xaa) [0x7f540c3a4ffa] /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(+0x2102a) [0x7f540c3b702a] /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit_valist+0x851) [0x7f540c3c06b1] /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit+0x82) [0x7f540c3c0852] /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0(gtk_list_store_set_value+0x13c) [0x7f540e20260c] [0x40104cdd] Debug info from gdb: Could not attach to process. If your uid matches the uid of the target process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try again as the root user. For more details, see /etc/sysctl.d/10-ptrace.conf ptrace: Operation not permitted. No threads. ================================================================= Got a SIGABRT while executing native code. This usually indicates a fatal error in the mono runtime or one of the native libraries used by your application. ================================================================= Aborted