.
Thread 4 (Thread 0x7f20939e2700 (LWP 32709)):
#0  0x00007f20ac8830fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x00007f20ad02ffa5 in g_cond_wait_until () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f20acfc9761 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f20acfc9e79 in g_async_queue_timed_pop () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f20939e952d in ?? () from /usr/lib/nautilus/extensions-3.0/libnautilus-dropbox.so
No symbol table info available.
#5  0x00007f20ad016645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#6  0x00007f20ac87ee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#7  0x00007f20ac5abcbd in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (Thread 0x7f20a287b700 (LWP 32638)):
#0  0x00007f20ac5a0303 in poll () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007f20acff2d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f20acff2ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f20a28824ad in ?? () from /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
No symbol table info available.
#4  0x00007f20ad016645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f20ac87ee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00007f20ac5abcbd in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#7  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 0x7f20a3692700 (LWP 32627)):
#0  0x00007f20ac5a0303 in poll () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007f20acff2d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f20acff31e2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f20ad5bd3b6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#4  0x00007f20ad016645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f20ac87ee9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00007f20ac5abcbd in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#7  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7f20b0877980 (LWP 32602)):
#0  0x00007f20acff9c7f in g_logv () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#1  0x00007f20acff9e42 in g_log () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f20af54307d in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
No symbol table info available.
#3  0x00007f20af54de41 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
No symbol table info available.
#4  0x00007f20ae6924f6 in _XError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
No symbol table info available.
#5  0x00007f20ae68f741 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
No symbol table info available.
#6  0x00007f20ae68f785 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
No symbol table info available.
#7  0x00007f20ae690378 in _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
No symbol table info available.
#8  0x00007f20ae68bd3d in XSync () from /usr/lib/x86_64-linux-gnu/libX11.so.6
No symbol table info available.
#9  0x00007f20af52063c in gdk_flush () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
No symbol table info available.
#10 0x00007f20afe4cb6e in gnome_bg_create_surface () from /usr/lib/libgnome-desktop-3.so.4
No symbol table info available.
#11 0x000000000049475b in ?? ()
No symbol table info available.
#12 0x0000000000494818 in ?? ()
No symbol table info available.
#13 0x0000000000494960 in ?? ()
No symbol table info available.
#14 0x00007f20acff2ab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#15 0x00007f20acff2de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#16 0x00007f20acff2ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#17 0x00007f20ad58b69c in g_application_run () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#18 0x000000000042bce9 in ?? ()
No symbol table info available.
#19 0x00007f20ac4d976d in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#20 0x000000000042bd35 in ?? ()
No symbol table info available.
#21 0x00007fffaa6769f8 in ?? ()
No symbol table info available.
#22 0x000000000000001c in ?? ()
No symbol table info available.
#23 0x0000000000000002 in ?? ()
No symbol table info available.
#24 0x00007fffaa677a07 in ?? ()
No symbol table info available.
#25 0x00007fffaa677a10 in ?? ()
No symbol table info available.
#26 0x0000000000000000 in ?? ()
No symbol table info available.