Application: kded4 ($Id: kded.cpp 1156841 2010-07-29 19:59:05Z zander $)
KDE Platform Version: 4.5.2 (KDE 4.5.2)
Qt Version: 4.6.3
Operating System: Linux 2.6.34.7-61.fc13.i686 i686
Distribution (Platform): Fedora RPMs

-- Information about the crash:
- What I was doing when the application crashed:
Browsing the Web using Firefox 3.6.12.  (Playing Facebook game - Cafeworld.) Mobile Broadband using 3G Modem.  Connection is disconnect/reconnect frequently (every 10 to 15 mins).  Signal Strength normally High but appears to drop to zero on occasions for about 1 second resulting in the disconnect/reconnect process.  These crashes began following upgrade to KDE 4.5.2 Plasma.  Reconnection issue was present in 4.4 KDE.

The crash can be reproduced some of the time.

-- Backtrace:
Application: KDE Daemon (kded4), signal: Segmentation fault
[KCrash Handler]
#7  0x02690ceb in isSignalConnected (sender=0x8925e78, m=0x23d3f64, local_signal_index=1, argv=0x0) at kernel/qobject_p.h:227
#8  QMetaObject::activate (sender=0x8925e78, m=0x23d3f64, local_signal_index=1, argv=0x0) at kernel/qobject.cpp:3218
#9  0x023a91a8 in Knm::Activatable::changed (this=0x8925e78) at /usr/src/debug/networkmanagement-0.9/i686-redhat-linux-gnu/libs/internals/moc_activatable.cpp:124
#10 0x023c02ce in Knm::InterfaceConnection::setActivationState (this=0x8925e78, state=Knm::InterfaceConnection::Unknown)
    at /usr/src/debug/networkmanagement-0.9/libs/internals/interfaceconnection.cpp:82
#11 0x01107499 in NMDBusActiveConnectionProxy::~NMDBusActiveConnectionProxy (this=0x88cd0c8, __in_chrg=<value optimized out>)
    at /usr/src/debug/networkmanagement-0.9/backends/NetworkManager/nmdbusactiveconnectionmonitor.cpp:58
#12 0x011074e3 in NMDBusActiveConnectionProxy::~NMDBusActiveConnectionProxy (this=0x88cd0c8, __in_chrg=<value optimized out>)
    at /usr/src/debug/networkmanagement-0.9/backends/NetworkManager/nmdbusactiveconnectionmonitor.cpp:60
#13 0x0110905c in NMDBusActiveConnectionMonitor::activeConnectionListChanged (this=0x888fa70) at /usr/src/debug/networkmanagement-0.9/backends/NetworkManager/nmdbusactiveconnectionmonitor.cpp:163
#14 0x010d9c32 in NMDBusActiveConnectionMonitor::qt_metacall (this=0x888fa70, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0xbf9cad5c)
    at /usr/src/debug/networkmanagement-0.9/i686-redhat-linux-gnu/backends/NetworkManager/moc_nmdbusactiveconnectionmonitor.cpp:77
#15 0x02681bcb in QMetaObject::metacall (object=0x888fa70, cl=QMetaObject::InvokeMetaMethod, idx=4, argv=0xbf9cad5c) at kernel/qmetaobject.cpp:237
#16 0x02690a75 in QMetaObject::activate (sender=0x888a2c0, m=0x47e7700, local_signal_index=6, argv=0x0) at kernel/qobject.cpp:3295
#17 0x047c62b8 in Solid::Control::NetworkManager::Notifier::activeConnectionsChanged (this=0x888a2c0)
    at /usr/src/debug/kdebase-workspace-4.5.2/i686-redhat-linux-gnu/libs/solid/control/networkmanager.moc:144
#18 0x047c6533 in Solid::Control::NetworkManager::Notifier::qt_metacall (this=0x888a2c0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0xbf9caebc)
    at /usr/src/debug/kdebase-workspace-4.5.2/i686-redhat-linux-gnu/libs/solid/control/networkmanager.moc:91
#19 0x047c6e2b in Solid::Control::NetworkManagerPrivate::qt_metacall (this=0x888a2c0, _c=QMetaObject::InvokeMetaMethod, _id=10, _a=0xbf9caebc)
    at /usr/src/debug/kdebase-workspace-4.5.2/i686-redhat-linux-gnu/libs/solid/control/networkmanager_p.moc:76
#20 0x02681bcb in QMetaObject::metacall (object=0x888a2c0, cl=QMetaObject::InvokeMetaMethod, idx=10, argv=0xbf9caebc) at kernel/qmetaobject.cpp:237
#21 0x02690a75 in QMetaObject::activate (sender=0x888c850, m=0x6a5bf0, local_signal_index=6, argv=0x0) at kernel/qobject.cpp:3295
#22 0x006a0e58 in Solid::Control::Ifaces::NetworkManager::activeConnectionsChanged (this=0x888c850)
    at /usr/src/debug/kdebase-workspace-4.5.2/i686-redhat-linux-gnu/libs/solid/control/ifaces/networkmanager.moc:152
#23 0x01129573 in NMNetworkManager::propertiesChanged (this=0x888c850, properties=...) at /usr/src/debug/kdebase-workspace-4.5.2/solid/networkmanager-0.7/manager.cpp:264
#24 0x0112a1f5 in NMNetworkManager::qt_metacall (this=0x888c850, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0xbf9cb168)
    at /usr/src/debug/kdebase-workspace-4.5.2/i686-redhat-linux-gnu/solid/networkmanager-0.7/manager.moc:98
#25 0x02681bcb in QMetaObject::metacall (object=0x888c850, cl=QMetaObject::InvokeMetaMethod, idx=19, argv=0xbf9cb168) at kernel/qmetaobject.cpp:237
#26 0x02690a75 in QMetaObject::activate (sender=0x888c8e0, m=0x11414a0, local_signal_index=2, argv=0xbf9cb168) at kernel/qobject.cpp:3295
#27 0x01133d94 in OrgFreedesktopNetworkManagerInterface::PropertiesChanged (this=0x888c8e0, _t1=...)
    at /usr/src/debug/kdebase-workspace-4.5.2/i686-redhat-linux-gnu/solid/networkmanager-0.7/nm-manager-clientinterface.moc:175
#28 0x01134325 in OrgFreedesktopNetworkManagerInterface::qt_metacall (this=0x888c8e0, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0xbf9cb3dc)
    at /usr/src/debug/kdebase-workspace-4.5.2/i686-redhat-linux-gnu/solid/networkmanager-0.7/nm-manager-clientinterface.moc:107
#29 0x027b628c in QDBusConnectionPrivate::deliverCall (this=0x8884d88, object=0x888c8e0, msg=..., metaTypes=..., slotIdx=7) at qdbusintegrator.cpp:904
#30 0x027c0f28 in QDBusCallDeliveryEvent::placeMetaCall (this=0x893bec0, object=0x888c8e0) at qdbusintegrator_p.h:101
#31 0x0268d09e in QObject::event (this=0x888c8e0, e=0x893bec0) at kernel/qobject.cpp:1248
#32 0x02d3377c in QApplicationPrivate::notify_helper (this=0x874fe28, receiver=0x888c8e0, e=0x893bec0) at kernel/qapplication.cpp:4306
#33 0x02d3a1d6 in QApplication::notify (this=0xbf9cbcb0, receiver=0x888c8e0, e=0x893bec0) at kernel/qapplication.cpp:3710
#34 0x0389bf7b in KApplication::notify (this=0xbf9cbcb0, receiver=0x888c8e0, event=0x893bec0) at /usr/src/debug/kdelibs-4.5.2/kdeui/kernel/kapplication.cpp:310
#35 0x0267d133 in QCoreApplication::notifyInternal (this=0xbf9cbcb0, receiver=0x888c8e0, event=0x893bec0) at kernel/qcoreapplication.cpp:726
#36 0x0267f5bc in sendEvent (receiver=0x0, event_type=0, data=0x87308a0) at kernel/qcoreapplication.h:215
#37 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x87308a0) at kernel/qcoreapplication.cpp:1367
#38 0x0267f73e in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1260
#39 0x026a5950 in sendPostedEvents (s=0x8752310) at kernel/qcoreapplication.h:220
#40 postEventSourceDispatch (s=0x8752310) at kernel/qeventdispatcher_glib.cpp:276
#41 0x00952525 in g_main_dispatch (context=0x8752290) at gmain.c:1960
#42 IA__g_main_context_dispatch (context=0x8752290) at gmain.c:2513
#43 0x00956268 in g_main_context_iterate (context=0x739490, block=1, dispatch=1, self=0x8750098) at gmain.c:2591
#44 0x00956449 in IA__g_main_context_iteration (context=0x8752290, may_block=1) at gmain.c:2654
#45 0x026a5446 in QEventDispatcherGlib::processEvents (this=0x87303a0, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#46 0x02de2336 in QGuiEventDispatcherGlib::processEvents (this=0x87303a0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#47 0x0267b80a in QEventLoop::processEvents (this=0xbf9cbc04, flags=...) at kernel/qeventloop.cpp:149
#48 0x0267bb4a in QEventLoop::exec (this=0xbf9cbc04, flags=...) at kernel/qeventloop.cpp:201
#49 0x0267f807 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1003
#50 0x02d33828 in QApplication::exec () at kernel/qapplication.cpp:3585
#51 0x03cf416b in kdemain (argc=1, argv=0xbf9cbed4) at /usr/src/debug/kdelibs-4.5.2/kded/kded.cpp:894
#52 0x080486bc in main (argc=1, argv=0xbf9cbed4) at /usr/src/debug/kdelibs-4.5.2/i686-redhat-linux-gnu/kded/kded4_dummy.cpp:3

Reported using DrKonqi