phablet@ubuntu-phablet:~$ G_DEBUG=fatal_criticals valgrind /usr/lib/arm-linux-gnueabihf/indicator-messages/indicator-messages-service 
==3132== Memcheck, a memory error detector
==3132== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al.
==3132== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info
==3132== Command: /usr/lib/arm-linux-gnueabihf/indicator-messages/indicator-messages-service
==3132== 
==3132== Invalid read of size 4
==3132==    at 0x493D0A4: g_object_unref (gobject.c:3089)
==3132==    by 0x499FA6B: g_source_callback_unref (gmain.c:1549)
==3132==    by 0x499FDD3: g_source_destroy_internal (gmain.c:1208)
==3132==    by 0x49A1B9B: g_main_context_dispatch (gmain.c:3089)
==3132==    by 0x49A1DC9: g_main_context_iterate.isra.22 (gmain.c:3712)
==3132==    by 0x49A20E7: g_main_loop_run (gmain.c:3906)
==3132==    by 0xC96F: main (messages-service.c:252)
==3132==  Address 0x4cd9e20 is 0 bytes inside a block of size 52 free'd
==3132==    at 0x482E25C: free (vg_replace_malloc.c:446)
==3132==    by 0x4951E35: g_type_free_instance (gtype.c:1938)
==3132==    by 0x4954ACF: g_value_unset (gvalue.c:274)
==3132==    by 0x1275D: _indicator_messages_service_skeleton_handle_method_call (indicator-messages-service.c:1443)
==3132==    by 0x48E59B7: skeleton_intercept_handle_method_call (gdbusinterfaceskeleton.c:609)
==3132==    by 0x48D4CBB: call_in_idle_cb (gdbusconnection.c:4868)
==3132==    by 0x49A1B69: g_main_context_dispatch (gmain.c:3065)
==3132==    by 0x49A1DC9: g_main_context_iterate.isra.22 (gmain.c:3712)
==3132==    by 0x49A20E7: g_main_loop_run (gmain.c:3906)
==3132==    by 0xC96F: main (messages-service.c:252)
==3132== 
==3132== Invalid read of size 4
==3132==    at 0x49527B4: g_type_check_instance_is_a (gtype.c:3970)
==3132==    by 0x493D0B5: g_object_unref (gobject.c:3089)
==3132==    by 0x499FA6B: g_source_callback_unref (gmain.c:1549)
==3132==    by 0x499FDD3: g_source_destroy_internal (gmain.c:1208)
==3132==    by 0x49A1B9B: g_main_context_dispatch (gmain.c:3089)
==3132==    by 0x49A1DC9: g_main_context_iterate.isra.22 (gmain.c:3712)
==3132==    by 0x49A20E7: g_main_loop_run (gmain.c:3906)
==3132==    by 0xC96F: main (messages-service.c:252)
==3132==  Address 0x4cd9e20 is 0 bytes inside a block of size 52 free'd
==3132==    at 0x482E25C: free (vg_replace_malloc.c:446)
==3132==    by 0x4951E35: g_type_free_instance (gtype.c:1938)
==3132==    by 0x4954ACF: g_value_unset (gvalue.c:274)
==3132==    by 0x1275D: _indicator_messages_service_skeleton_handle_method_call (indicator-messages-service.c:1443)
==3132==    by 0x48E59B7: skeleton_intercept_handle_method_call (gdbusinterfaceskeleton.c:609)
==3132==    by 0x48D4CBB: call_in_idle_cb (gdbusconnection.c:4868)
==3132==    by 0x49A1B69: g_main_context_dispatch (gmain.c:3065)
==3132==    by 0x49A1DC9: g_main_context_iterate.isra.22 (gmain.c:3712)
==3132==    by 0x49A20E7: g_main_loop_run (gmain.c:3906)
==3132==    by 0xC96F: main (messages-service.c:252)
==3132== 

(process:3132): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
==3132== 
==3132== HEAP SUMMARY:
==3132==     in use at exit: 154,313 bytes in 3,612 blocks
==3132==   total heap usage: 13,086 allocs, 9,474 frees, 450,747 bytes allocated
==3132== 
==3132== LEAK SUMMARY:
==3132==    definitely lost: 131 bytes in 3 blocks
==3132==    indirectly lost: 61 bytes in 1 blocks
==3132==      possibly lost: 9,376 bytes in 296 blocks
==3132==    still reachable: 135,833 bytes in 3,199 blocks
==3132==         suppressed: 0 bytes in 0 blocks
==3132== Rerun with --leak-check=full to see details of leaked memory
==3132== 
==3132== For counts of detected and suppressed errors, rerun with: -v
==3132== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 37 from 7)
Killed