In KDE I was able to get a trace but not in GNOME:

KDE Trace:

-- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f9931d7f760 (LWP 4054))]

Thread 3 (Thread 0x7f990db99710 (LWP 4056)):
#0  0x00007f992ed76f53 in *__GI___poll (fds=<value optimized out>, nfds=<value
optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f992b73c4a9 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007f992b73c8fc in g_main_context_iteration () from
/lib/libglib-2.0.so.0
#3  0x00007f993037e566 in QEventDispatcherGlib::processEvents (this=0x12ff550,
flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:414
#4  0x00007f9930353992 in QEventLoop::processEvents (this=<value optimized
out>, flags=) at kernel/qeventloop.cpp:149
#5  0x00007f9930353d6c in QEventLoop::exec (this=0x7f990db98db0, flags=) at
kernel/qeventloop.cpp:201
#6  0x00007f993025dd59 in QThread::exec (this=<value optimized out>) at
thread/qthread.cpp:487
#7  0x00007f9930334178 in QInotifyFileSystemWatcherEngine::run (this=0xa62e20)
at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f9930260775 in QThreadPrivate::start (arg=0xa62e20) at
thread/qthread_unix.cpp:248
#9  0x00007f992ffd09ca in start_thread (arg=<value optimized out>) at
pthread_create.c:300
#10 0x00007f992ed8369d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f990cd74710 (LWP 4057)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f9924e302a6 in QTWTF::TCMalloc_PageHeap::scavengerThread
(this=0x7f992510e220) at
../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2304
#2  0x00007f9924e302e9 in QTWTF::TCMalloc_PageHeap::runScavengerThread
(context=0x7f992511c2ec) at
../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1438
#3  0x00007f992ffd09ca in start_thread (arg=<value optimized out>) at
pthread_create.c:300
#4  0x00007f992ed8369d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f9931d7f760 (LWP 4054)):
[KCrash Handler]
#5  TaskManager::Task::icon (this=0x0, width=32, height=32, allowResize=true)
at ../../../libs/taskmanager/task.cpp:406
#6  0x00007f9911636869 in ?? () from /usr/lib/kde4/plasma_applet_daisy.so
#7  0x00007f991163dff7 in ?? () from /usr/lib/kde4/plasma_applet_daisy.so
#8  0x00007f9930367e3f in QMetaObject::activate (sender=0xd893b0, m=<value
optimized out>, local_signal_index=<value optimized out>, argv=0x20) at
kernel/qobject.cpp:3293
#9  0x00007f99309d43bb in KWindowSystem::windowChanged (this=0x7fff083eea70,
_t1=52428803, _t2=0x7fff083eee50) at ./kwindowsystem.moc:178
#10 0x00007f99309d7471 in KWindowSystemPrivate::x11Event (this=0xca4520,
ev=0x7fff083ef610) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:180
#11 0x00007f993089bd06 in KAppX11HackWidget::publicx11Event (this=<value
optimized out>, _event=0x7fff083ef610) at
../../kdeui/kernel/kapplication.cpp:903
#12 KApplication::x11EventFilter (this=<value optimized out>,
_event=0x7fff083ef610) at ../../kdeui/kernel/kapplication.cpp:953
#13 0x00007f99253a68c7 in PlasmaApp::x11EventFilter (this=0xa1aa40,
event=0x7fff083ef610) at ../../../../plasma/desktop/shell/plasmaapp.cpp:600
#14 0x00007f992f566641 in qt_x11EventFilter (ev=0x7fff083ef610) at
kernel/qapplication_x11.cpp:399
#15 0x00007f992f575191 in QApplication::x11ProcessEvent (this=<value optimized
out>, event=0x7fff083ef610) at kernel/qapplication_x11.cpp:3231
#16 0x00007f992f5a1882 in x11EventSourceDispatch (s=0xa34750, callback=<value
optimized out>, user_data=<value optimized out>) at
kernel/qguieventdispatcher_glib.cpp:146
#17 0x00007f992b7388c2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#18 0x00007f992b73c748 in ?? () from /lib/libglib-2.0.so.0
#19 0x00007f992b73c8fc in g_main_context_iteration () from
/lib/libglib-2.0.so.0
#20 0x00007f993037e513 in QEventDispatcherGlib::processEvents (this=0x9a6da0,
flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#21 0x00007f992f5a146e in QGuiEventDispatcherGlib::processEvents
(this=0x7fff083eea70, flags=<value optimized out>) at
kernel/qguieventdispatcher_glib.cpp:204
#22 0x00007f9930353992 in QEventLoop::processEvents (this=<value optimized
out>, flags=) at kernel/qeventloop.cpp:149
#23 0x00007f9930353d6c in QEventLoop::exec (this=0x7fff083ef940, flags=) at
kernel/qeventloop.cpp:201
#24 0x00007f9930357aab in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:981
#25 0x00007f9925394fb2 in kdemain (argc=<value optimized out>, argv=<value
optimized out>) at ../../../../plasma/desktop/shell/main.cpp:112
#26 0x00000000004070f3 in launch (argc=1, _name=<value optimized out>,
args=<value optimized out>, cwd=<value optimized out>, envc=0, envs=<value
optimized out>, reset_env=false, tty=0x0, 
    avoid_loops=false, startup_id_str=0x40a4f9 "0") at
../../kinit/kinit.cpp:717
#27 0x0000000000407cb0 in handle_launcher_request (sock=8, who=<value optimized
out>) at ../../kinit/kinit.cpp:1209
#28 0x000000000040823a in handle_requests (waitForPid=0) at
../../kinit/kinit.cpp:1402
#29 0x0000000000408e22 in main (argc=4, argv=<value optimized out>, envp=<value
optimized out>) at ../../kinit/kinit.cpp:1845




I am using plasma-widget-daisy version 0.0.4.22a-0ubuntu2 and it was not manually compiled or anything just installed/upgraded using synaptic.