Application: plasma-desktop (0.3)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-19-generic x86_64
Distribution: Ubuntu lucid (development branch)

-- Information about the crash:
I add Network Manager plasmoid, trying to connect to few network.
After that I open "Manage connections" in this plasmoid and remove two or three wireless connections.
At this moment Network Manager plasmoid crash.

The crash can be reproduced every time.

 -- Backtrace:
Application: Рабочее пространство Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fa5c0a98760 (LWP 1947))]

Thread 2 (Thread 0x7fa597dab710 (LWP 1949)):
#0  0x00007fa5bda7df93 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fa5ba4434a9 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007fa5ba4438fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007fa5bf085566 in QEventDispatcherGlib::processEvents (this=0x243b630, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:414
#4  0x00007fa5bf05a992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#5  0x00007fa5bf05ad6c in QEventLoop::exec (this=0x7fa597daadb0, flags=) at kernel/qeventloop.cpp:201
#6  0x00007fa5bef64d59 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:487
#7  0x00007fa5bf03b178 in QInotifyFileSystemWatcherEngine::run (this=0x244efc0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fa5bef67775 in QThreadPrivate::start (arg=0x244efc0) at thread/qthread_unix.cpp:248
#9  0x00007fa5becd79ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#10 0x00007fa5bda8a6dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fa5c0a98760 (LWP 1947)):
[KCrash Handler]
#5  0x0000000000000050 in ?? ()
#6  0x00007fa5bf0724f3 in QObject::disconnect (sender=0x3603610, signal=<value optimized out>, receiver=0x1bb4050, method=<value optimized out>) at kernel/qobject.cpp:2764
#7  0x00007fa5a0ae2128 in QObject::disconnect (this=0x3603610) at /usr/include/qt4/QtCore/qobject.h:229
#8  InterfaceItem::currentConnectionChanged (this=0x3603610) at ../../applet/interfaceitem.cpp:276
#9  0x00007fa5a0ae2ae6 in InterfaceItem::connectionStateChanged (this=0x3603610, state=Solid::Control::NetworkInterface::Disconnected) at ../../applet/interfaceitem.cpp:390
#10 0x00007fa5a0ad8c21 in InterfaceItem::qt_metacall (this=0x3603610, _c=<value optimized out>, _id=<value optimized out>, _a=0x7fffb8cb9a20) at moc_interfaceitem.cpp:112
#11 0x00007fa5a0ad8dd8 in WirelessInterfaceItem::qt_metacall (this=0x1bb4050, _c=3100350288, _id=-1597049600, _a=0x2a3a378) at moc_wirelessinterfaceitem.cpp:69
#12 0x00007fa5bf06ee3f in QMetaObject::activate (sender=0x2106e90, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x2a3a378) at kernel/qobject.cpp:3293
#13 0x00007fa5a2a9e2fd in Solid::Control::NetworkInterface::connectionStateChanged (this=0x1bb4050, _t1=3, _t2=5, _t3=38) at ./networkinterface.moc:157
#14 0x00007fa5a2a9e410 in Solid::Control::NetworkInterface::qt_metacall (this=0x2106e90, _c=<value optimized out>, _id=<value optimized out>, _a=0x7fffb8cb9ba0) at ./networkinterface.moc:125
#15 0x00007fa5a2aa2b60 in Solid::Control::WirelessNetworkInterface::qt_metacall (this=0x1bb4050, _c=3100350288, _id=-1597049600, _a=0x2a3a378) at ./wirelessnetworkinterface.moc:105
#16 0x00007fa5bf06ee3f in QMetaObject::activate (sender=0x2130360, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x2a3a378) at kernel/qobject.cpp:3293
#17 0x00007fa59ffccbed in NMNetworkInterface::connectionStateChanged (this=0x1bb4050, _t1=3, _t2=5, _t3=38) at ./networkinterface.moc:183
#18 0x00007fa59ffcda6c in NMNetworkInterface::qt_metacall (this=0x2130360, _c=QMetaObject::InvokeMetaMethod, _id=3, _a=0x7fffb8cb9db0) at ./networkinterface.moc:120
#19 0x00007fa59ffc4ab0 in NMWirelessNetworkInterface::qt_metacall (this=0x1bb4050, _c=3100350288, _id=-1597049600, _a=0x2a3a378) at moc_wirelessnetworkinterface.cpp:88
#20 0x00007fa5bf06ee3f in QMetaObject::activate (sender=0x2132be0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x2a3a378) at kernel/qobject.cpp:3293
#21 0x00007fa59ffd639a in OrgFreedesktopNetworkManagerDeviceInterface::StateChanged (this=0x1bb4050, _t1=3, _t2=5, _t3=38) at ./nm-deviceinterface.moc:134
#22 0x00007fa59ffd63f3 in OrgFreedesktopNetworkManagerDeviceInterface::qt_metacall (this=0x2132be0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fffb8cba120) at ./nm-deviceinterface.moc:90
#23 0x00007fa5bd421486 in QDBusConnectionPrivate::deliverCall (this=<value optimized out>, object=<value optimized out>, msg=<value optimized out>, metaTypes=..., slotIdx=<value optimized out>)
    at qdbusintegrator.cpp:904
#24 0x00007fa5bd42c05f in QDBusCallDeliveryEvent::placeMetaCall(QObject*) () from /usr/lib/libQtDBus.so.4
#25 0x00007fa5bf06bd49 in QObject::event (this=0x2132be0, e=0x2b52630) at kernel/qobject.cpp:1248
#26 0x00007fa5be1f822c in QApplicationPrivate::notify_helper (this=0x1b10880, receiver=0x2132be0, e=0x2b52630) at kernel/qapplication.cpp:4300
#27 0x00007fa5be1fe6fb in QApplication::notify (this=0x1acc650, receiver=0x2132be0, e=0x2b52630) at kernel/qapplication.cpp:4183
#28 0x00007fa5bf5a3526 in KApplication::notify (this=0x1acc650, receiver=0x2132be0, event=0x2b52630) at ../../kdeui/kernel/kapplication.cpp:302
#29 0x00007fa5bf05c06c in QCoreApplication::notifyInternal (this=0x1acc650, receiver=0x2132be0, event=0x2b52630) at kernel/qcoreapplication.cpp:704
#30 0x00007fa5bf05e7e7 in QCoreApplication::sendEvent (receiver=0x0, event_type=<value optimized out>, data=0x1a8dc30) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#31 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x1a8dc30) at kernel/qcoreapplication.cpp:1345
#32 0x00007fa5bf0859d3 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#33 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:276
#34 0x00007fa5ba43f8c2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#35 0x00007fa5ba443748 in ?? () from /lib/libglib-2.0.so.0
#36 0x00007fa5ba4438fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#37 0x00007fa5bf085513 in QEventDispatcherGlib::processEvents (this=0x1a8f140, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#38 0x00007fa5be2a846e in QGuiEventDispatcherGlib::processEvents (this=0x1bb4050, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#39 0x00007fa5bf05a992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#40 0x00007fa5bf05ad6c in QEventLoop::exec (this=0x7fffb8cbab60, flags=) at kernel/qeventloop.cpp:201
#41 0x00007fa5bf05eaab in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#42 0x00007fa5b409bfb2 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../plasma/desktop/shell/main.cpp:112
#43 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
#44 0x0000000000407cb0 in handle_launcher_request (sock=8, who=<value optimized out>) at ../../kinit/kinit.cpp:1209
#45 0x000000000040823a in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1402
#46 0x0000000000408e22 in main (argc=4, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1845

Reported using DrKonqi