Application that crashed: systemsettings
Version of the application: 1.0
KDE Version: 4.3.3 (KDE 4.3.3)
Qt Version: 4.5.3
Operating System: Linux 2.6.31-ARCH x86_64

What I was doing when the application crashed:
System settings crashes when aqpm databases configuration is selected. I am using Arch Linux + KDEmod 4.3.3. The problem repeated several times. Also, under Aqpm global configuration, when I tick both options under Advanced (to Use Syslog and Deltas) or Aqpm Options (multi-server download), the System Settings crashes. All this crashes are reproducable. 

 -- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fd73ad7a760 (LWP 5383))]

Thread 2 (Thread 0x7fd72ca3e710 (LWP 5577)):
[KCrash Handler]
#5  0x00007fd72d706773 in Aqpm::ConfigurationThread::getMirrorList(Aqpm::Configuration::MirrorType) () from /usr/lib/libaqpm.so.1
#6  0x00007fd72d70b8f4 in Aqpm::ConfigurationThread::customEvent(QEvent*) () from /usr/lib/libaqpm.so.1
#7  0x00007fd738b777f5 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#8  0x00007fd7396f660c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#9  0x00007fd7396fd8de in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#10 0x00007fd73a32a926 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#11 0x00007fd738b6833c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#12 0x00007fd738b68f4a in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#13 0x00007fd738b90cc3 in ?? () from /usr/lib/libQtCore.so.4
#14 0x00007fd7355431fe in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#15 0x00007fd735546bb8 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#16 0x00007fd735546ce0 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#17 0x00007fd738b90863 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#18 0x00007fd738b66c72 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#19 0x00007fd738b67044 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#20 0x00007fd738a8058b in QThread::exec() () from /usr/lib/libQtCore.so.4
#21 0x00007fd72d6f65e0 in Aqpm::ContainerThread::run() () from /usr/lib/libaqpm.so.1
#22 0x00007fd738a832e5 in ?? () from /usr/lib/libQtCore.so.4
#23 0x00007fd73783d81a in start_thread () from /lib/libpthread.so.0
#24 0x00007fd73848d8cd in clone () from /lib/libc.so.6
#25 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fd73ad7a760 (LWP 5383)):
#0  0x00007fd7384850d3 in poll () from /lib/libc.so.6
#1  0x00007fd73374989a in _xcb_conn_wait () from /usr/lib/libxcb.so.1
#2  0x00007fd733749e37 in _xcb_out_send () from /usr/lib/libxcb.so.1
#3  0x00007fd73374a0e5 in xcb_writev () from /usr/lib/libxcb.so.1
#4  0x00007fd737127d5a in _XSend () from /usr/lib/libX11.so.6
#5  0x00007fd737128281 in _XEventsQueued () from /usr/lib/libX11.so.6
#6  0x00007fd737110c8b in XEventsQueued () from /usr/lib/libX11.so.6
#7  0x00007fd739789e45 in ?? () from /usr/lib/libQtGui.so.4
#8  0x00007fd7355431fe in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#9  0x00007fd735546bb8 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#10 0x00007fd735546ce0 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#11 0x00007fd738b90863 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#12 0x00007fd7397896de in ?? () from /usr/lib/libQtGui.so.4
#13 0x00007fd738b66c72 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#14 0x00007fd738b67044 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#15 0x00007fd72d6fcc7f in Aqpm::SynchronousLoop::SynchronousLoop(Aqpm::Configuration::ActionType, QMap<QString, QVariant> const&) () from /usr/lib/libaqpm.so.1
#16 0x00007fd72d704283 in Aqpm::Configuration::getMirrorList(Aqpm::Configuration::MirrorType) const () from /usr/lib/libaqpm.so.1
#17 0x00007fd72bff56bf in MirrorWidget::reloadMirrors() () from /usr/lib/kde4/kcm_aqpmdatabases.so
#18 0x00007fd72bff57a9 in MirrorWidget::MirrorWidget(Aqpm::Configuration::MirrorType, QWidget*) () from /usr/lib/kde4/kcm_aqpmdatabases.so
#19 0x00007fd72bfef95c in DatabaseConfig::addArchWidget(QString const&) () from /usr/lib/kde4/kcm_aqpmdatabases.so
#20 0x00007fd72bff0c0e in DatabaseConfig::load() () from /usr/lib/kde4/kcm_aqpmdatabases.so
#21 0x00007fd73a3d26f1 in KCModule::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkdeui.so.5
#22 0x00007fd72bfeab40 in DatabaseConfig::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/kde4/kcm_aqpmdatabases.so
#23 0x00007fd738b77799 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#24 0x00007fd7397447ff in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#25 0x00007fd7396f660c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#26 0x00007fd7396fd8de in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#27 0x00007fd73a32a926 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#28 0x00007fd738b6833c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#29 0x00007fd738b68f4a in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#30 0x00007fd738b90cc3 in ?? () from /usr/lib/libQtCore.so.4
#31 0x00007fd7355431fe in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#32 0x00007fd735546bb8 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#33 0x00007fd735546ce0 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#34 0x00007fd738b90863 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#35 0x00007fd7397896de in ?? () from /usr/lib/libQtGui.so.4
#36 0x00007fd738b66c72 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#37 0x00007fd738b67044 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#38 0x00007fd738b691f9 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#39 0x000000000040cb69 in _start ()

Reported using DrKonqi