Application: plasma-desktop (0.4)
KDE Platform Version: 4.9.4
Qt Version: 4.8.3
Operating System: Linux 3.5.0-22-generic x86_64
Distribution: Ubuntu 12.10

-- Information about the crash:
I clicked the back button in network-manager to see the other networks. 
network-manager restarted itself, along with kde.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff95515d7c0 (LWP 2621))]

Thread 4 (Thread 0x7ff92eba5700 (LWP 2622)):
#0  0x00007ff948de203c in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:37
#1  __pthread_mutex_unlock (mutex=0x7ff928000a90) at pthread_mutex_unlock.c:290
#2  0x00007ff94871ce51 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff9486df769 in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff9486dfcf9 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ff9486dfea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007ff9516eec16 in QEventDispatcherGlib::processEvents (this=0x7ff9280008f0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x00007ff9516bf2bf in QEventLoop::processEvents (this=this@entry=0x7ff92eba4cd0, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007ff9516bf548 in QEventLoop::exec (this=0x7ff92eba4cd0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007ff9515c0b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#10 0x00007ff95169f9af in QInotifyFileSystemWatcherEngine::run (this=0x15a86d0) at io/qfilesystemwatcher_inotify.cpp:248
#11 0x00007ff9515c3aec in QThreadPrivate::start (arg=0x15a86d0) at thread/qthread_unix.cpp:338
#12 0x00007ff946017764 in ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
#13 0x00007ff948ddee9a in start_thread (arg=0x7ff92eba5700) at pthread_create.c:308
#14 0x00007ff954a4bcbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#15 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7ff92dcd3700 (LWP 2623)):
#0  0x00007ff9486df5f8 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff9486dfcab in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff9486dfea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff9516eec16 in QEventDispatcherGlib::processEvents (this=0x7ff9200008f0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007ff9516bf2bf in QEventLoop::processEvents (this=this@entry=0x7ff92dcd2cd0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007ff9516bf548 in QEventLoop::exec (this=0x7ff92dcd2cd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007ff9515c0b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007ff95169f9af in QInotifyFileSystemWatcherEngine::run (this=0xc90b80) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007ff9515c3aec in QThreadPrivate::start (arg=0xc90b80) at thread/qthread_unix.cpp:338
#9  0x00007ff946017764 in ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
#10 0x00007ff948ddee9a in start_thread (arg=0x7ff92dcd3700) at pthread_create.c:308
#11 0x00007ff954a4bcbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7ff926caf700 (LWP 2627)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ff94e745cd7 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007ff94e745d09 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007ff946017764 in ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
#4  0x00007ff948ddee9a in start_thread (arg=0x7ff926caf700) at pthread_create.c:308
#5  0x00007ff954a4bcbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ff95515d7c0 (LWP 2621)):
[KCrash Handler]
#6  0x000000000000c3bc in ?? ()
#7  0x00007ff9516d86e1 in QObject::disconnect (sender=0x18d5200, signal=0x0, receiver=0x1d958c0, method=0x0) at kernel/qobject.cpp:2891
#8  0x00007ff92d2b8f9b in InterfaceDetailsWidget::disconnectSignals() () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#9  0x00007ff92d2b71fb in InterfaceDetailsWidget::setUpdateEnabled(bool) () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#10 0x00007ff92d2aafe9 in NMPopup::toggleInterfaceTab() () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#11 0x00007ff92d29bd66 in NMPopup::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#12 0x00007ff9516d5f5f in QMetaObject::activate (sender=0x1d958c0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#13 0x00007ff92d29b615 in InterfaceDetailsWidget::back() () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#14 0x00007ff92d29b365 in InterfaceDetailsWidget::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#15 0x00007ff9516d5f5f in QMetaObject::activate (sender=0x1cee980, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#16 0x00007ff954633045 in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=<optimized out>, _c=<optimized out>) at ./pushbutton.moc:84
#17 Plasma::PushButton::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./pushbutton.moc:76
#18 0x00007ff9516d5f5f in QMetaObject::activate (sender=0x1cef440, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff846a8740) at kernel/qobject.cpp:3547
#19 0x00007ff9510d2422 in QAbstractButton::clicked (this=<optimized out>, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:220
#20 0x00007ff950e25d2e in QAbstractButtonPrivate::emitClicked (this=this@entry=0x1cef870) at widgets/qabstractbutton.cpp:548
#21 0x00007ff950e26560 in QAbstractButtonPrivate::click (this=this@entry=0x1cef870) at widgets/qabstractbutton.cpp:541
#22 0x00007ff950e267cc in QAbstractButton::mouseReleaseEvent (this=0x1cef440, e=0x3278d70) at widgets/qabstractbutton.cpp:1123
#23 0x00007ff950ab7850 in QWidget::event (this=0x1cef440, event=0x3278d70) at kernel/qwidget.cpp:8371
#24 0x00007ff950a67e9c in QApplicationPrivate::notify_helper (this=this@entry=0x8b0ee0, receiver=receiver@entry=0x1cef440, e=e@entry=0x3278d70) at kernel/qapplication.cpp:4562
#25 0x00007ff950a6cb6b in QApplication::notify (this=<optimized out>, receiver=0x1cef440, e=0x3278d70) at kernel/qapplication.cpp:4105
#26 0x00007ff9523791d6 in KApplication::notify (this=0x85fa20, receiver=0x1cef440, event=0x3278d70) at ../../kdeui/kernel/kapplication.cpp:311
#27 0x00007ff9516c056e in QCoreApplication::notifyInternal (this=0x85fa20, receiver=0x1cef440, event=0x3278d70) at kernel/qcoreapplication.cpp:915
#28 0x00007ff950a68cd3 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#29 QApplicationPrivate::sendMouseEvent (receiver=0x1cef440, event=0x3278d70, alienWidget=0x0, nativeWidget=0x1cef440, buttonDown=0x7fff846a8fa8, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3173
#30 0x00007ff951048e24 in QGraphicsProxyWidgetPrivate::sendWidgetMouseEvent (this=0x1cee9c0, event=0x7fff846a9730) at graphicsview/qgraphicsproxywidget.cpp:283
#31 0x00007ff951028589 in QGraphicsItem::sceneEvent (this=0x1cee990, event=0x7fff846a9730) at graphicsview/qgraphicsitem.cpp:6741
#32 0x00007ff951051950 in sendMouseEvent (mouseEvent=0x7fff846a9730, this=0x92ae10) at graphicsview/qgraphicsscene.cpp:1295
#33 QGraphicsScenePrivate::sendMouseEvent (this=0x92ae10, mouseEvent=0x7fff846a9730) at graphicsview/qgraphicsscene.cpp:1274
#34 0x00007ff951052345 in QGraphicsScene::mouseReleaseEvent (this=<optimized out>, mouseEvent=0x7fff846a9730) at graphicsview/qgraphicsscene.cpp:4128
#35 0x00007ff95106510c in QGraphicsScene::event (this=0x8b4470, event=0x7fff846a9730) at graphicsview/qgraphicsscene.cpp:3458
#36 0x00007ff950a67e9c in QApplicationPrivate::notify_helper (this=this@entry=0x8b0ee0, receiver=receiver@entry=0x8b4470, e=e@entry=0x7fff846a9730) at kernel/qapplication.cpp:4562
#37 0x00007ff950a6c30a in QApplication::notify (this=0x85fa20, receiver=0x8b4470, e=0x7fff846a9730) at kernel/qapplication.cpp:4423
#38 0x00007ff9523791d6 in KApplication::notify (this=0x85fa20, receiver=0x8b4470, event=0x7fff846a9730) at ../../kdeui/kernel/kapplication.cpp:311
#39 0x00007ff9516c056e in QCoreApplication::notifyInternal (this=0x85fa20, receiver=0x8b4470, event=0x7fff846a9730) at kernel/qcoreapplication.cpp:915
#40 0x00007ff95107b4e1 in QGraphicsView::mouseReleaseEvent (this=0x1cdd330, event=0x7fff846aa060) at graphicsview/qgraphicsview.cpp:3338
#41 0x00007ff950ab7850 in QWidget::event (this=0x1cdd330, event=0x7fff846aa060) at kernel/qwidget.cpp:8371
#42 0x00007ff950e66b66 in QFrame::event (this=0x1cdd330, e=0x7fff846aa060) at widgets/qframe.cpp:557
#43 0x00007ff95107e95b in QGraphicsView::viewportEvent (this=0x1cdd330, event=0x7fff846aa060) at graphicsview/qgraphicsview.cpp:2866
#44 0x00007ff9516c06d6 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x1ce2b70, event=0x7fff846aa060) at kernel/qcoreapplication.cpp:1025
#45 0x00007ff950a67e6c in QApplicationPrivate::notify_helper (this=this@entry=0x8b0ee0, receiver=receiver@entry=0x1ce2b70, e=e@entry=0x7fff846aa060) at kernel/qapplication.cpp:4558
#46 0x00007ff950a6cb6b in QApplication::notify (this=<optimized out>, receiver=0x1ce2b70, e=0x7fff846aa060) at kernel/qapplication.cpp:4105
#47 0x00007ff9523791d6 in KApplication::notify (this=0x85fa20, receiver=0x1ce2b70, event=0x7fff846aa060) at ../../kdeui/kernel/kapplication.cpp:311
#48 0x00007ff9516c056e in QCoreApplication::notifyInternal (this=0x85fa20, receiver=0x1ce2b70, event=0x7fff846aa060) at kernel/qcoreapplication.cpp:915
#49 0x00007ff950a68cd3 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#50 QApplicationPrivate::sendMouseEvent (receiver=0x1ce2b70, event=0x7fff846aa060, alienWidget=0x1ce2b70, nativeWidget=0x1cdb820, buttonDown=0x7ff951544308 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3173
#51 0x00007ff950ae6554 in QETWidget::translateMouseEvent (this=this@entry=0x1cdb820, event=event@entry=0x7fff846aa7e0) at kernel/qapplication_x11.cpp:4622
#52 0x00007ff950ae544f in QApplication::x11ProcessEvent (this=0x85fa20, event=0x7fff846aa7e0) at kernel/qapplication_x11.cpp:3737
#53 0x00007ff950b0cfa2 in x11EventSourceDispatch (s=0x8b1730, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#54 0x00007ff9486dfab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#55 0x00007ff9486dfde8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#56 0x00007ff9486dfea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#57 0x00007ff9516eebf6 in QEventDispatcherGlib::processEvents (this=0x7a7ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#58 0x00007ff950b0cc1e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#59 0x00007ff9516bf2bf in QEventLoop::processEvents (this=this@entry=0x7fff846aabb0, flags=...) at kernel/qeventloop.cpp:149
#60 0x00007ff9516bf548 in QEventLoop::exec (this=0x7fff846aabb0, flags=...) at kernel/qeventloop.cpp:204
#61 0x00007ff9516c4708 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#62 0x00007ff954d52035 in kdemain (argc=1, argv=0x7fff846aaea8) at ../../../../plasma/desktop/shell/main.cpp:120
#63 0x00007ff95497976d in __libc_start_main (main=0x4006a0 <main(int, char**)>, argc=1, ubp_av=0x7fff846aaea8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff846aae98) at libc-start.c:226
#64 0x00000000004006d1 in _start ()

Reported using DrKonqi